A lot of open-source backend frameworks that offer great features for web development are easily available on various platforms. These, backend frameworks are an indispensable part of website development. Basically, they function as the core components of a website. In fact, they help control everything in the background of a website.

Essentially backend frameworks consist of extensive libraries, APIs, web servers, and various other open-source components. They handle database management and help establish proper communication with the front-end of the website, as well as create backend functionality. Database-backed web applications such as Ruby on Rails, CakePHP, etc., that follow the MVC (model-view-controller) model enable 30–40% faster development.

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Java E-Commerce Libraries help build e-commerce websites. It provides various frameworks, tools, and utilities for developing online shopping websites. 


There are many Java E-Commerce libraries available in the market, which enable you to write your own e-commerce website in easy steps. Java E-Commerce Libraries like shopizer, micro-ecommerce, and keyist-ecommerce are also used for developing an eCommerce website. These libraries are used in e-commerce applications since they provide a platform for making payment gateways, shopping carts, and other functionalities of an e-commerce website.


Shopizer is the most popular Java e-commerce library that allows you to create a customized online store without any coding. It comes with integrated payment gateways, shipping plugins, and many other features, which make it one of the best options for small businesses looking to start an online store. Keyist-Ecommerce is an open-source Java library that allows you to build an online store with minimal effort and time. The library supports multiple languages, including English, Chinese, Japanese and Korean. It also offers integrated payment gateways, shipping plugins, and other features that make it easy for developers to build custom websites without having to write any code themselves. Micro-eCommerce is an open-source Java library that allows you to build an online store without any coding knowledge required by developers. It has over 350 features built in along with integrated payment gateways, shipping plugins, and many other features that make it easy for developers to create custom websites. Some of the most popular Java E-Commerce Libraries among developers are given below

shopizer:  

  • Shopizer is an open-source e-commerce software platform designed for building.  
  • It is a flexible and customizable solution for businesses.  
  • Shopizer is released under the Apache 2.0 license, making it open-source and free to use.  

eCommerce-order-service:  

  • eCommerce-order-service is a Java library typically used in websites and e-commerce applications.  
  • It has a Permissive License, and it has a medium support.  
  • It handles various aspects related to customer orders. 

micro-ecommerce:  

  • Micro-ecommerce might refer to the use of microservices architecture in the context.  
  • This architecture aims to improve scalability, maintainability, and agility in the development.  
  • Micro-ecommerce helps describe smaller or lighter e-commerce businesses.  

Keyist-Ecommerce:  

  • Keyist-Ecommerce is a term used within a specific context or community.  
  • It may be beneficial to seek information from sources associated with that context.  
  • This will provide the most accurate and up-to-date information about its features and functionalities.  

e-commerce-microservice:  

  • e-commerce microservice refers to the application of microservices architecture in the development.  
  • Microservices architecture is an approach where a large and complex application decomposes.  
  • Microservice in the e-commerce system handles a specific business capability.  

ddd-example-ecommerce:  

  • DDD is an approach to software development. It emphasizes understanding the business domain and modeling it in code.  
  • DDD often involves defining bounded contexts to encapsulate specific business domains.  
  • DDD distinguishes between entities and value objects. Entities have an identity and are mutable.  

Android-E-Commerce-Shopping-Application:  

  • Android-E-Commerce-Shopping-Application is a Java library. It is typically used in Retail, Security, Authentication, and Firebase applications.  
  • Android-E-Commerce-Shopping-Application has no bugs or vulnerabilities.  
  • It has a Permissive License, and it has low support.  

Ecommerce-Morningmist-Android:  

  • Ecommerce-Morningmist-Android is a Java library that is typically used in retail websites.  
  • Ecommerce-Morningmist-Android has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported. 

FAQ

1. What are Java E-commerce Libraries?  

Java E-commerce Libraries are sets of pre-built, reusable code components and functionalities. These libraries often include modules for product management, cart handling, and payment processing.  

  

2. Why use Java for E-commerce Development?  

Java is popular for its portability, scalability, and robustness. It's platform-independent, making it suitable for building enterprise-level applications. Java has a vast ecosystem and community support. It also contributes to its popularity in e-commerce.  

  

3. Which Java E-commerce Libraries are widely used?  

Some widely used Java E-commerce Libraries include:  

  1. Broadleaf Commerce: An open-source, customizable framework for building e-commerce solutions.  
  2. Hybris: A robust and scalable e-commerce platform.  
  3. Apache OFBiz (Open for Business): An open-source framework for building enterprise automation applications.  

  

4.  How can I integrate Payment Gateways with Java E-commerce Libraries?  

Java E-commerce Libraries often provide APIs or modules for integrating with popular payment. The Developers follow the documentation provided by the library in a specific way.  

  

5. Are there Java E-commerce Libraries suitable for small businesses?  

Yes, some Java E-commerce Libraries cater to the needs of small businesses. The Smaller libraries or frameworks may also be suitable for lightweight e-commerce requirements.  


Node.js is a flexible and lightweight platform that allows developers to build fast and scalable applications that work brilliantly in real-time. Its event-driven, non-blocking I/O model makes it highly efficient for data-intensive applications that need to run across multiple devices. Ecommerce applications often run on Node payment processing software components. These components work towards ensuring the integration of payment gateways, thereby enabling multiple payment options and risk-free authentication. Some of these payment processing platforms may include PayPal, Apple Pay, Google Pay, UnionPay, and similar applications. JavaScript’s dynamic and flexible environment ensures that every payment system runs smoothly and efficiently in real-time. Here are our picks of the 15 best JavaScript Node.js payment processing libraries that are open source in 2022. expressCart - fully functioning Node.js shopping cart; stripe-node - Node.js library for the Stripe API; stripe-billing-typographic - Typographic is a complete, full-stack example of a Stripe Billing integration.


Develop a Python trading app with Data Collection, Technical Analysis, Plotting, Machine Learning, NLP, and more using algorithmic trading libraries.

The crucial aspect is to train your applications to evaluate trading ideas and map out historical data by sourcing data and information from diverse sources. These can include spreadsheets, CSVs, and online platforms like Yahoo Finance, Google Finance, etc. Moreover, you can easily forecast live trading prices with the help of artificial neural networks and trading algorithms built using Python trading packages and algorithmic libraries. With the Python trading code, you can enable functions like aggregations, sorting, and visualization of complex data with just one or two commands.


Check out some of the top and most widely used open-source algorithmic trading libraries that provide code packages in Python to developers:

pyalgotrade  

  • It offers a simple and easy-to-use framework for developing trading strategies.  
  • It makes it accessible for both beginners and experienced developers.  
  • It has an active community, and its documentation is comprehensive. 

zipline  

  • It is crucial for developing and testing trading strategies.  
  • It provides a realistic simulation environment for backtesting strategies using historical market data.  
  • It offers event-driven backtesting, transaction cost modeling, and performance analytics.   

ta-lib  

  • It is a Python library used in Websites, Business, and Bitcoin applications.   
  • Integrating ta-lib into trading algorithms allows for the creation of more sophisticated strategies.  
  • It will help identify potential entry and exit points in the market. 

freqtrade  

  • It is an open-source cryptocurrency trading bot written in Python.  
  • Its importance in Python algorithmic trading libraries lies in its features and flexibility.  
  • It supports many cryptocurrency exchanges, enabling users to trade on different platforms.  

qlib  

  • It is a Python library designed for quantitative finance and algorithmic trading.  
  • It offers efficient data management tools, including data downloading, preprocessing, and feature engineering.  
  • It simplifies the process of developing and testing trading strategies.  

abu  

  • It is a Python library used in Blockchain and cryptocurrency applications.  
  • It has no bugs or vulnerabilities, a Strong Copyleft License, and medium support.  
  • You can install it using 'pip install abu' or download it from GitHub or PyPI.  

backtrader  

  • It is a popular Python library for developing and testing algorithmic trading strategies.  
  • It is flexible, allowing users to install and test various trading strategies.  
  • It is a valuable tool for both developing and deploying trading strategies.  

trump2cash  

  • It is a Python library used in Analytics and predictive Analytics applications.  
  • It has no bugs or vulnerabilities and has built files available.  
  • It is a stock trading bot powered by Trump tweets.  

binance-trade-bot  

  • It plays a crucial role in automating trading strategies. It is done on the Binance cryptocurrency exchange.  
  • It often includes features for backtesting trading strategies.  
  • These are often customizable. This allows traders to tailor strategies to their specific preferences and risk tolerance.  

rqalpha  

  • It offers a framework for developing and testing trading strategies.  
  • It is open source, allowing developers to inspect and change the source code.  
  • It makes it accessible for both beginners and experienced users.  

tensortrade  

  • It helps in building and researching algorithmic trading strategies. We can do this by using deep reinforcement learning.  
  • It benefits from contributions and feedback from a community of developers and researchers.  
  • It helps in adapting to different trading scenarios and experimenting with various models.  

python-binance  

  • It is a Python wrapper for the Binance API.   
  • It makes it easier to interact with the Binance cryptocurrency exchange.  
  • It supports WebSocket streams, providing real-time updates on market events.  

Crypto-Signal 

  • It plays a crucial role in Python algorithmic trading libraries.  
  • It provides key insights and triggers for automated trading decisions.  
  • It can include risk management parameters. We can help algorithms adjust position sizes or exit trades to manage risk.  

finmarketpy  

  • It is a Python library designed for financial market analysis and algorithmic trading.  
  • It includes a wide range of technical analysis tools and indicators.  
  • It supports event-driven backtesting.  

mlfinLab  

  • It focuses on machine learning applications in finance and algorithmic trading.   
  • It provides tools for effective feature engineering, a crucial aspect of financial ML.  
  • It includes functionalities for fractional differentiation.  

tqsdk-python  

  • It is a Python SDK (Software Development Kit) designed for quantitative trading.  
  • It aims to provide an interface for algorithmic trading. We can do it by making it accessible for beginners and experienced developers.  
  • A vibrant community and active support can enhance the development experience.  

catalyst  

  • It plays a crucial role as it acts as a framework. That facilitates the development, testing, and execution of trading strategies.  
  • It offers a structured environment for designing and implementing trading strategies.  
  • Effective risk management is a crucial aspect of algorithmic trading.  

clairvoyant  

  • It is a Python library used in websites and business applications.  
  • Backtest your model for accuracy and simulate investment portfolio performance.  
  • It is Software designed to identify and check trading strategies.  

quant-trading  

  • Quantitative trading, or quant-trading, is essential in algorithmic trading.  
  • Python's extensive libraries, such as Pandas and NumPy. It is easing efficient data analysis and manipulation.  
  • It helps in backtesting trading strategies.

eiten  

  • It is a Python library used in websites and portfolio applications.  
  • Backtesting module that both backtests and forward tests all portfolios.  
  • It is used as a statistical and algorithmic investing strategy.

zvt

  • Zero-cost virtual trading (ZVT) in Python algorithmic trading libraries.  
  • Need for testing and refining trading strategies without risking real capital.  
  • It allows developers to simulate trades in a realistic market environment.

backtesting.py  

  • It is used in algorithmic trading to evaluate the performance of trading strategies.  
  • It helps assess the effectiveness of a trading strategy. We can do so by applying it to historical market data.  
  • Calculates and presents various performance metrics to quantify the strategy's performance.  

binance-trader  

  • It provides a Python API for interacting with Binance.   
  • It allows traders to access market data, execute trades, and manage their accounts.  
  • It helps in tracking and managing portfolios.

pytrader  

  • It is a library related to trading or finance.   
  • Its importance would likely be tied to its features and functionalities.  
  • It helps in cryptocurrency trading robots. 

High-frequency-Trading-Model-with-IB  

  • It helps traders to execute orders at high speeds.  
  • It takes advantage of small price discrepancies in the market.  
  • It will provide access to real-time market data and quick order execution.

qstrader  

  • It offers a framework for developing and testing quantitative trading strategies.  
  • It allows users to define and install custom trading strategies.  
  • It offers flexibility for a wide range of trading styles and preferences.

pyrh

  • It could enable users to automate trading strategies. We can do so by interacting with the Robinhood platform.  
  • The framework could ease the retrieval and analysis of financial data from Robinhood. We can do it with informed decision-making.  
  • It may allow integration with other Python libraries and tools.  

coinbasepro-python  

  • It is often called coinbasepro-python, a Python client for the Coinbase Pro API.  
  • It supports the placement and management of orders on the Coinbase Pro platform.  
  • Developers can customize and adapt the library to suit their specific trading strategies.  

bulbea  

  • It is a Python library in Artificial Intelligence, Machine Learning, and DL apps.  
  • It has a Non-SPDX License. You can download it from GitHub.  
  • It is a Deep Learning-based Python Library for Stock Market Prediction and Modelling.

thetagang  

  • It is a Python library used in Automation and bot applications.  
  • It is an IBKR trading bot. It helps collect premiums by selling options using the "The Wheel" strategy.  
  • It implements a modified version of The Wheel with my tweaks.  

ib_insync  

  • It is a Python library designed for algorithmic trading with IB TWS and IB Gateway.  
  • It allows for asynchronous programming, enabling you to handle many tasks.  
  • It uses an event-driven programming model.

RLTrader  

  • It plays a crucial role in Python algorithmic trading libraries.  
  • It leverages reinforcement learning techniques to make trading decisions.  
  • It can optimize decision-making processes and manage risk.   

cointrol  

  • It is crucial in algorithmic trading to manage risk.   
  • It ensures orderly execution and adapts to market conditions.  
  • Real-time monitoring allows algorithms to react to changing market conditions.

deep_trader  

  • It is a Python library used in Institutions, Learning, Education, AI, ML, Nodejs, and Unity apps.  
  • It uses reinforcement learning on the stock market, and the agent tries to learn trading.  
  • It has no bugs, it has no vulnerabilities, it has built files available, and it has medium support.   

qtpylib  

  • It is a Python library that provides tools for algorithmic trading.  
  • It is built on the popular open-source algorithmic trading library Quantlib.  
  • It helps be flexible and allows traders to customize and adapt the library.

surpriver  

  • It helps in Artificial Intelligence, Machine Learning, and Deep Learning applications.  
  • It helps find big moving stocks before they move using a machine.  
  • It generates price and volume return features and plenty of technical indicators.  

AIAlpha  

  • It enables the development of more sophisticated trading strategies.  
  • It leverages advanced machine-learning techniques to analyze vast amounts of financial data.  
  • It allows algorithms to adapt to changing market conditions.   

IbPy  

  • IbPy, or Interactive Brokers Python API, is important in algorithmic trading libraries.  
  • It provides a Python interface to interact with the Interactive Brokers trading platform.  
  • It allows developers to install automated trading strategies using Python.  

personae  

  • Personae in Python algorithm trading libraries refer to predefined sets of characteristics.  
  • It is assigned to different types of market participants or trading strategies.  
  • It can model diverse market scenarios and participant behaviors.

hummingbot  

  • It plays a significant role in Python algorithmic trading libraries.  
  • It supports various cryptocurrency exchanges. It enables traders to connect to many markets.  
  • It provides liquidity in the cryptocurrency markets.  

FAQ

1. What is algorithmic trading?  

Algorithmic trading involves using computer algorithms. It automates the process of buying or selling financial instruments in the market. It aims to execute trading strategies with speed and efficiency.  


2. Why use Python for algorithmic trading?  

It is a popular programming language. It helps in algorithmic trading. It is because of its simplicity, extensive libraries, and large community. It provides tools like NumPy, pandas, and scikit-learn. Those tools help in data analysis and machine learning.   

  

3. Which Python libraries do we use for algorithmic trading?  

Commonly used libraries include:  

  • Backtrader: A versatile backtesting and live trading framework.  
  • Zipline: A powerful library for backtesting trading strategies.  
  • ccxt: A cryptocurrency trading library supporting many exchanges.  
  • pandas: Useful for data manipulation and analysis.  
  • NumPy: Essential for numerical operations.  

  

4. What is backtesting?  

It is the process of testing a trading strategy. We can do so using historical data to assess its performance. It helps traders test how a strategy would have performed in the past.  

  

5. How do I install these libraries?  

You can install these libraries using the pip package manager.   

For example, pip install backtrader.  

Judge Yvonne Gonzalez Rogers ordered that iOS apps must be allowed to support non Apple payment options in the Epic v. Apple case. In this case, Apple also scored a partial victory as the judge stopped short of calling it a monopoly. The judge also ordered Epic Games to pay Apple 30% of its revenue through the direct payment system. Epic is fighting a similar lawsuit against Google. Countries like South Korea have passed laws requiring Apple and Google to offer alternative payment systems to their users in the country. While the jury is still out on the Epic v. Apple case, it brings out two aspects. Is what is often referred to by developers as the "Apple Tax" of 30% indeed justified? For this reason, Epic launched the Epic Games Store to demonstrate that they could operate at a lower revenue cut of 12%. The second aspect is platform and payments interoperability. When platform interoperability becomes mandated or a global best practice, developers should be ready to bring in payment gateways of their choice. The kandi kit for App Store Payment Alternatives showcases the popular open source payment gateways such as Omnipay, Active Merchant, and CI Merchant and libraries available to connect with leading payment platforms such as Stripe, Braintree, and Razorpay.

Omnipay

Core libraries and samples from Omnipay, a framework agnostic, multi-gateway payment processing library for PHP.

Active Merchant

Libraries on Active Merchant, a simple payment abstraction library extracted from Shopify.

CI Merchant

Though no longer actively supported use the library to build and support your own gateway. If you are not looking to build but to use, then leverage other frameworks.

Braintree

Libraries for Braintree integration.

Razorpay

Libraries for Razorpay integration.

Stripe

Libraries for Stripe integration.

Technology has always been evolving at a breakneck speed, but the pace of change today is surely unprecedented. Applications of blockchain, for instance, go beyond cryptocurrencies into industries like finance, healthcare, supply chain and logistics, asset management, etc. It is one of the most disruptive technologies of the 21st century, and now you can program blockchain web apps using JavaScript.  With that in mind, here are some of the JavaScript libraries to help you in the process. ccxt - A cryptocurrency trading API; ZeroNet - Decentralized websites using Bitcoin crypto and the BitTorrent network; truffle - A tool for developing smart contracts. The following is a list of the most popular open-source libraries for building and scaling JavaScript Blockchain Applications.

Carousels (slideshows) are containers with images or information that users can select by clicking a button that forwards or backward through the slideshow. The image carousel is a container (slideshow) that users choose by clicking a button that is used to direct them to the next or previous image in the slideshow. A timer can automatically change the images, or they can be manually changed by clicking the buttons displayed. Following are the steps to be followed for building Carousel And Screen Saver builder, 1. Transition Effect And Touch slider 2. Multiple Layout 3. Slider Libraries 4. Screen Saver Libraries

Transition Effect And Touch slider

These libraries are used to process the transition effect .

Slider Libraries

These libraries are used to build the carousel .

Multiple Layout

These libraries are used to build multiple layout in website.

Screen Saver Libraries

These libraries are used to process the screen saver.

When trading in Forex, it is important to develop a trading bot that makes risk management easy - since Forex involves high-level financial market data.


Python is one of the most popular programming languages for Forex because it enables the API to be functionally separated to perform buying and selling operations. Python-based open-source software supports both backtesting and live trading operations to help the traders develop sound strategies for a Forex application. Python libraries also provide code for working with real-time currency exchange rates.


Below is a comprehensive list of the 26 best open-source python libraries for developing Forex algorithmic trading applications. If you are looking for a full-scale, event-driven library that transitions seamlessly from testing to live trading, then qsforex is for you. Yahoofinancials is a code package that enables you to pull data like indices, currencies, ETFs, etc. from Yahoo Finance.


If you intend to trade in cryptocurrencies, bitex enables you to do that by using API classes without employing interface classes. Forex-python is a library that shows exchange rates and cyptocurrency price index using ratesapi.io.

qsforex

  • It helps the development and testing of trading algorithms. We intend it for the forex market.   
  • It provides a framework for implementing various trading strategies.   
  • It enables users to assess their performance based on historical market data.   

yahoofinancials  

  • It focuses on fetching historical market data from Yahoo Finance.   
  • It facilitates the retrieval of historical data for specific currency pairs. Users could get historical exchange rate information between different currency pairs.   
  • It integrates historical foreign exchange data into various financial applications.   
  • It allows developers to incorporate currency-related insights and analytics into their projects.

bitex 

  • It provides a unified API for accessing various cryptocurrency exchanges. It exchanges its digital assets for traditional currencies.   
  • It allows users to manage their cryptocurrency portfolios across different exchanges.   
  • It facilitates the execution of trades across multiple platforms.   

forex-python

  • It is a Python library that provides a way to fetch foreign exchange rates.   
  • It performs currency conversion and accesses historical data.   
  • It offers a simple and easy-to-use interface. It works with foreign exchange data. 

LSTM---Stock-prediction 

  • LSTM models can forecast future exchange rates based on historical data and patterns.  
  • It can process sequential data to identify patterns and trends in the forex market.  
  • It captures the dependencies and relationships between different currency pairs over time.  
  • It enables traders to make decisions on the buying and selling of currencies.  

Google-Search-API

  • Developers can use the Google Search API to fetch real-time foreign exchange rates.  
  • It enables them to integrate up-to-date currency exchange data into their applications.  
  • It helps retrieve the market updates related to the foreign exchange market.  

money

  • The "money" library in Python refers to a Python package.  
  • It provides functionality for working with monetary values and currencies.  
  • It facilitates seamless currency conversion between different currencies.  
  • It converts the monetary values of currency based on the prevailing exchange rates.  

ratesapi

  • It is an open-source foreign exchange rates API.   
  • It provides real-time and historical foreign exchange rate data.   
  • It offers a simple way for developers to access up-to-date foreign exchange rates.   

Forex-DQN

  • It approximates a state-value function in a Q-Learning framework with a neural network.  
  • Foreign exchange is a global market. It helps in the trading of currencies.   
  • It is a learning agent that trains a critic. It helps estimate discounted expected cumulative reward.   

gym-fx

  • Gym-FX is an open-source Python library and Pythonic API.  
  • It provides a forex trading environment for developing and testing reinforcement learning agents.  
  • It provides simulated training environments to train reinforcement learning agents.  
  • It is an essential toolkit for training RL algorithms.  

currencyconverter

  • It provides functionality for currency conversion and foreign exchange rate retrieval.  
  • This library allows users to convert monetary values between different currencies.  
  • It retrieves up-to-date exchange rate information.  
  • Developers can perform various foreign exchange-related tasks efficiently within their Python applications.  

TradingGym

  • "TradingGym" could provide a simulated trading environment.  
  • It allows users to test and develop trading strategies for foreign exchange.  
  • It enables traders and developers to experiment with different trading approaches.  
  • It assesses their effectiveness in different market conditions.  

forex-rl-challenge

  • It offers a collection of reinforcement learning algorithms for foreign exchange markets.  
  • It helps optimize trading strategies and decision-making processes.  
  • It integrates external data. It provides access to historical and real-time foreign exchange market data.  

Forex-and-Stock-Python-Pattern-Recognizer 

  • It can recognize patterns inside Forex or stock data.  
  • Foreign exchanges help identify recurring patterns in market data.   
  • It can make informed trading decisions.   
  • It helps analyze historical market data to detect patterns and trends.   
  • It provides insights into potential future market movements.   

django-money-rates

  • A little Django app that uses py-moneyed to add support for Money fields in your models and forms.   
  • It supports for proper Money value handling (using the standard Money design pattern)   
  • A currency class and definitions for all currencies in circulation   
  • It helps format most currencies with the correct currency sign.   

Trading-Bot

  • It is a software program that executes trades on behalf of traders in foreign exchange.  
  • It follows pre-defined trading strategies and algorithms.  
  • It can continuously watch the forex market and execute trades anytime.  

intrinio-realtime-python-sdk 

  • It is a software development kit.   
  • It allows developers to integrate real-time financial data into their Python applications.  
  • It enables developers to access real-time foreign exchange data, including live currency exchanges.   
  • It helps analyze real-time currency market data. It helps make decisions in the foreign exchange market. 

alfred3-workflow-CurrencyX

  • It is a Python library in Security, Cryptography, and Ethereum applications.  
  • It captures the dependencies and relationships between different currency pairs over time.  
  • It enables them to integrate up-to-date currency exchange data into their applications.  

currency-exchange

  • It is a Python library typically used in Automation BPM applications.  
  • It provides functionality for currency conversion and foreign exchange rate retrieval.  
  • This library allows users to convert monetary values between different currencies.  
  • It retrieves up-to-date exchange rate information.  

django-exchange

  • It helps in handling currency conversion and displaying foreign exchange rates.   
  • It makes it easier to manipulate money throughout your application.   
  • It provides a simple, flexible, and extensible way to work with currencies in Django.   

ImundboQuant

  • It is an open-source project that uses machine learning in Python and MQL4.  
  • It helps in stock market and forex market predictions and fully automated trading.  
  • It is a powerful tool. It can improve users' investment performance.   
  • It helps to make better investment decisions by providing information about the market.  

mexbtcapi

  • It is a Python library typically used in Blockchain, Cryptocurrency, and Bitcoin applications.  
  • It is a Multi-Exchange Bitcoin API. It provides consistent APIs of various cryptocurrency exchanges.  
  • This API supports multi-currency and multi-exchange functions.  

jiji-with-tensorflow-example

  • It is a Python library typically used in Artificial Intelligence and Tensorflow applications.  
  • This library allows users to convert monetary values between different currencies.  
  • It retrieves up-to-date exchange rate information.  
  • It facilitates seamless currency conversion between different currencies.  

pyfx 

  • It is a Python library typically used in Blockchain and cryptocurrency applications.  
  • A way to integrate historical foreign exchange data into various financial applications.   
  • It allows developers to incorporate currency-related insights and analytics into their projects.  

FinanceMarketDataGrabber

  • It is a Python library typically used in Web Services, REST, and Panda's applications.  
  • It helps access stock/forex quotes from Yahoo and Google Finance 'APIs'.  
  • We can receive multiple stock quotes and multiple symbols in a single call.  
  • It retrieves real-time and Historical data for foreign exchange.  

QuantConnect-Trading-Strategies

  • It helps in Machine Learning and Deep Learning applications.  
  • Use algorithmic trading strategies to identify trends and patterns to make trading decisions.  
  • It includes risk management parameters to help minimize potential losses.  

FAQ:  

1. What is the Python library for currency?   

Forex-Python is a Python foreign exchange library. It provides a way to get a currency conversion rate through API calls. It takes the currency codes you want to convert from one currency to another. It returns the current value.   


2. What is foreign exchange data?   

The foreign exchange market is a global decentralized market. It helps in currency trading. It will help determine foreign exchange rates for every currency. It will include all aspects of buying and exchanging currencies at determined prices.   


3. What is the function of a currency converter in Python?   

Access up-to-date data directly from reliable sources. Automatically update the conversion rates without manual intervention. Ensure accuracy and reliability in conversions.   


4. What is fixer io?   

Fixer.io is a simple and easy API for current and historical foreign exchange rates. It offers real-time data on the exchange rates for world currencies.   


5. Is there a free exchange rate API?   

Yes, a 100% free solution for handling exchange rate conversions exists. Our currency API provides live and historical exchange rate data ranging.   

Amazon was recently fined $886 million for EU data privacy. The Luxembourg National Commission for Data Protection (CNPD) imposed the fine on Amazon Europe in a July 16 decision, the company disclosed in a regulatory filing. Amazon further stated that they strongly disagree with the CNPD’s ruling, and intended to appeal against it. In 2019, Google was fined a GDPR penalty of €50 million.

The penalty stems from the 2018 complaint by French privacy rights group La Quadrature du Net, to ensure Big Tech companies don’t use consumer data to manipulate their behavior for political or commercial purposes. It was filed on behalf of more than 10,000 customers and alleged that Amazon manipulates customers for commercial means by choosing what advertising and information they receive. The complaint also targeted Apple, Facebook, Google, and LinkedIn.

The General Data Protection Regulation (GDPR) is the strictest privacy and security law in the world. The regulation was put into effect on May 25, 2018. While it has been in effect for a while, complying to its 99 Articles and 173 Recitals of the Regulation could be difficult as seen with the case with the tech majors. The GDPR has inspired other legislations, such as Brazil’s LGPD to the CCPA in California. Hence compliance is critical for businesses around the world.

kandi collection on GDPR Compliance Solutions showcases popular open source libraries that help you in achieving GDPR compliance. The use cases span across frameworks and checklists, data scanners, and compliance toolkits. Do not construe this as legal advice.

GDPR Frameworks and Checklists

GDPR-Transparency-and-Consent-Framework by InteractiveAdvertisingBureau and gdpr-checklist by privacyradius can help you understand the GDPR requirements and implementation approach.

GDPR Scanners

Use the below libraries for scanning GDPR compliance across different technologies and providers.

GDPR Compliance Libraries

Leverage the below libraries for implementing GDPR compliance, privacy policies and cookie consent in your website across specific technologies.

Over 850 footballers in the UK have threatened to sue over 17 sports data processing companies over using their personal data without consent. While they have initially identified companies across sports data analytics, entertainment and betting, they believe over 150 companies could be using players' data without consent. The core of the plea is non-compliance under Article 4 of the GDPR, which prohibits using personal data such as physical, physiological, location information without consent. To highlight the scale of the issue, about 7,000 pieces of information on one player are being used in analytics and other uses. If this legal action is successful, it can reshape how data is used in sports and across many industries. It can even create a new economy around 'data trading'. While GDPR adherence and PII usage guidelines shape up globally over the next many years, it is essential for developers to proactively comply with current GDPR and develop strong practices around PII data governance. kandi kit on GDPR Review and Compliance showcases popular libraries that provide frameworks, scanners, best practices, and implementation utilities for GDPR compliance. News source: https://www.bbc.com/news/uk-wales-58873132

GDPR Frameworks and Audits

Solutions for understanding the GDPR framework, audit tools, and scanners.

GDPR Compliance Implementation

Utilities that enable you to implement GDPR compliance in our solutions.

One of the reasons Python trading libraries are a good choice for financial market analysis is that Python is an OOP language.

Each function in Python and the data manipulated by it belong to a unique object, making it possible to abstract individual functions. Quantitative finance banks on backtesting trading strategies - Python modules provide pre-written code with the lowest possible error potential, making it a reliable language for risk analysis. Augmenting a Python code with a robust framework such as Django enables developers to create an analysis tool capable of machine learning and time series analysis of the market.


Here is a great list of useful Python stock market tracker libraries you can use as a readymade solution for your programs. For crawling the historical data, specifically of China stocks, install the Tushare library. Another great library to have in your collection is yfinance, which gives you the capability of downloading market data. Qlib is a great tool for quantitative investments, providing the trader with capability of using AI in their stock trading applications.

tushare: 

  • It provides access to financial data from various sources. 
  • It is valuable for stock market tracking and analysis. 
  • It helps in cleaning and preprocessing financial data. It saves time for analysts and researchers.

qlib:  

  • It is a quantitative investment library for Python.   
  • Its importance lies in its features tailored for quantitative finance and algorithmic trading.  
  • It supports live trading. It allows users to install and execute their strategies in real-time markets.  

ajenti:  

  • It is a Python library used in User Interface, Frontend Framework, Angular applications.  
  • It is a Linux & BSD modular server admin panel.  
  • It is a web-based control panel for managing systems. It includes a dashboard for monitoring various aspects of a system.

yfinance:  

  • It provides a simple interface to download financial data from Yahoo Finance.  
  • It allows you to access a diverse set of financial data. It includes historical stock prices, dividends, and splits.  
  • Being used, yfinance benefits from an active community.  

trump2cash:  

  • It is a Python library used in Analytics, Predictive Analytics applications.  
  • It is a stock trading bot powered by Trump tweets.  
  • The code is written in Python and run on a Google Compute Engine instance.  

rqalpha:  

  • It is a Python library designed for quantitative finance and algorithmic trading.  
  • It provides a framework for backtesting. Also, it provides a paper on trading strategies using historical market data.  
  • RQAlpha aims to make it accessible for those starting with algorithmic trading.  

LSTM-Neural-Network-for-Time-Series-Prediction:  

  • They are crucial for time series prediction in Python stock market tracker libraries.  
  • The importance lies in the capacity to learn and remember information.  
  • They excel in handling temporal relationships, making them well-suited for predicting stock prices.   

pandas-ta:  

  • pandas-ta (Technical Analysis) is an extension library for Pandas.  
  • It helps to ease the technical analysis of financial market data.  
  • This allows for a thorough analysis of price movements. It helps in making informed trading decisions.  

clairvoyant:  

  • clairvoyant techniques, or predictive analytics, can be important for forecasting future stock prices.  
  • By leveraging historical data and various algorithms, this aims to predict market trends.  
  • This can assist traders and investors in making informed decisions. Its basis is future price movements.  

backtesting.py:  

  • It is crucial to evaluate the performance of trading strategies using historical data.  
  • It allows you to simulate and test how a specific strategy would have performed in the past.  
  • It helps traders and developers refine their strategies and optimize parameters.  

bulbea:  

  • It helps in Artificial Intelligence, Machine Learning, and Deep Learning applications.  
  • It is a Deep Learning based Python Library for Stock Market Prediction and Modelling.  
  • It has built files available, and it has medium support. But bulbea has a Non-SPDX License. You can download it from GitHub.  

Reddit-Stock-Trends:  

  • It is a Python library used in Web Site, Business applications.  
  • Traders often check these trends for potential investment insights.  
  • It helps to see trending stock tickers on Reddit and check Stock performance.  

deep_trader:  

  • It helps in Institutions, Learning, Education, Artificial Intelligence, ML, Nodejs, Unity apps.  
  • This project uses reinforcement learning on stock market. Its agent tries to learn trading.  
  • The goal is to check if the agent can learn to read tapes. 

surpriver:  

  • It helps in Artificial Intelligence, Machine Learning, Deep Learning applications.  
  • It is a module for loading data from Yahoo Finance.  
  • It is a folder to save data dictionaries for later use.

stock-rnn:  

  • It is a type of neural network designed for analyzing and predicting stock market data.  
  • It can capture these dynamics. This allows more accurate predictions compared to simpler models.  
  • Identifies the most important factors affecting stock prices without explicit feature engineering.  

AIAlpha:  

  • AIAlpha refers to the integration of artificial intelligence (AI) capabilities.  
  • Integrating AIAlpha in stock market trackers allows for dynamic portfolio management.  
  • It enables stock market trackers to make decisions based on more analysis of data.  

Personae:  

  • Personae, or personas, is a Python stock market tracker library.  
  • It refers to the user roles or profiles that interact with the software.  
  • Active traders may use real-time data and technical analysis tools. It also has customizable dashboards for quick decision-making.  

stocksight:  

  • It is a Python library used in Analytics and Predictive Analytics applications.  
  • It is an open-source stock market analysis software. This software uses Elasticsearch to store Twitter and news headlines data for stocks.  
  • It analyzes the emotions of what the author writes and does sentiment analysis on the text.

yahoo-finance:  

  • It is a Python library used in Web Services, REST, and Pandas applications. It allows you to access financial data from Yahoo Finance.   
  • Its importance lies in providing a convenient and accessible way to retrieve information.  
  • It simplifies the process of fetching and working with stock-related information.  

fooltrader:  

  • fooltrader is a Python library used in websites and business applications.   
  • It is a tool or library related to stock market tracking. You can install it using 'pip install fooltrader' or download it from GitHub or PyPI.  
  • Its importance would depend on its features, accuracy, and community support.  

MachineLearningStocks:  

  • ML models can analyze historical stock data to identify patterns and trends. It aids in predicting future stock prices.  
  • It can help assess risk by analyzing market volatility, enabling better-informed investment decisions.  
  • It can process large datasets, extracting valuable information for making informed investment decisions.  

FAQ 

1. What is a Python stock market tracker library?  

A Python stock market tracker library is a set of tools and functions. Those tools and functions access, retrieve and analyze financial market data. It particularly allows us to retrieve stock prices using Python programming language.  


2. How do I install a stock market tracker library in Python?  

You can use a package manager like pip to install a stock market tracker library. For example, you can use pip install yfinance for Yahoo Finance API.  


3. What are some popular Python stock market tracker libraries?  

Some popular libraries include yfinance, pandas_datareader, and alpha_vantage. These libraries provide interfaces to access financial data from various sources.  


4. Can I track real-time stock prices with Python?  

Yes, some libraries, like yfinance and alpha_vantage, provide real-time stock price data. Keep in mind that real-time data might come with limitations depending on the data source.  


5. How do I retrieve historical stock data using Python?  

You can use functions provided by libraries. Those libraries are like yfinance or pandas_datareader to fetch historical stock data.   

For example:  

With yfinance, you can use history = yf.download("AAPL", start="2022-01-01", end="2023-01-01").  

Data scraping is used to gather valuable insights, conduct market research, monitor competitor prices, or build price comparison websites. 


In this digital world, the internet has changed the way we do our shopping. Online shopping is the act of purchasing products or services over the internet. It gathers all the information that will make all your internal and external recommendation processes, sales, and distribution based on the chronology of what you have been buying and bought earlier. Some of the libraries below can help you to achieve this as DIY.

Data Collection

Ecommerce Websites

Ecommerce Services

The Trump Media and Technology Group is being investigated by Software Freedom Conservancy for non-compliance with copyleft licensing. The issue stems from President Donald Trump’s new social network, Truth Social appearing to be forked from Mastodon. While Mastodon is open source and available to use, it is licensed under Affero General Public License (or AGPLv3) that requires The Trump Media and Technology Group to share its source code with all who used the site. If they fail to do this within 30 days, their rights and permissions in the software are automatically and permanently terminated, making their platform inoperable. So if you are just a developer or a former POTUS, copyleft provisions apply to all. If you want to use open source, use kandi.openweaver.com. All libraries are matched to SPDX license definitions and highlighted clearly for appropriate use. Privacy, regulation, bias, and many other issues are weighing down popular social networks. Users are seeking self-hosted social platforms that can be governed by themselves. But do use them with the appropriate licenses. The kandi kit on Opensource Social Platforms lists popular opensource libraries that you can use to host private social channels.


The primary technologies for creating Web pages are HTML and CSS. HTML provides the page structure while CSS handles the visual layout.


HTML, which stands for "Hypertext Markup Language.", forms the foundation for defining the arrangement and content of web pages. HTML operates by utilizing a series of tags that mark specific elements within a page. CSS, which stands for Cascading Style Sheets, is a language employed for creating stylesheets that govern the arrangement and design of HTML documents. 


This kit has some simple-to-use exercise in HTML/CSS to help someone new to Web Development to learn how to program in HTML/CSS and get started with their journey. 

For a detailed tutorial on installing & executing the solution as well as learning resources including training & certification opportunities, please visit the OpenWeaver Community

Knowledge Resources for basics

Kit Solution Source

Support


If you need help using this kit, you may reach us at the OpenWeaver Community.

kandi 1-Click Install

Python Stock Indicator Library helps analyze and visualize financial market data. It will help analyze the performance of a particular index or stock. These libraries offer technical indicators like Bollinger Bands, Moving Averages, RSI, and MACD. These libraries offer easy-to-use APIs. Libraries help fetch stock prices and other financial data from different sources.   


Some libraries can help create visualizations like scatter plots, line, and candlestick charts. These charts will help investors and traders to understand the data better. Libraries that can be used for deep learning and machine learning models. These will help predict future stock prices depending on historical data. Some libraries help test trading strategies using historical data to determine profitability.   


Here are the 12 best Python Stock Indicator libraries to help developers: 

examples-of-web-crawlers: 

  • The ability to manage the crawled URLs and follow links to new pages.   
  • The ability to handle many requests to many web pages to improve efficiency and speed.   
  • The ability to use proxy servers to hide the IP address and avoid being detected or blocked by websites. 

abu: 

  • Offers a simple and user-friendly interface for data extraction and web crawling.  
  • Offers built-in data processing and storage functions like data filtering, cleaning, and storage.  
  • Offers data analysis functions like correlation analysis, trend analysis, and data visualization. 

akshare: 

  • Help users easily acquire financial data and information from different sources. 
  • Offers various financial data like economic indicators, corporate financial statements, and stock prices.  
  • Offers real time data updates for many financial instruments. 

rqalpha: 

  • Allows users to backtest and trade using historical and real time data.    
  • Offers a trading simulator to simulate trading activities in a real trading environment.   
  • Offers real time market data from Yahoo Finance, Wind, and RQData. 

stock: 

  • Is a Python library designed for working with stock data from the Chinese stock market.  
  • Offers access to financial statements, market news, and stock prices. 
  • Allows users to aggregate data from different sources. 
  • Customize the data in different ways like format, calculation, and frequency. 

alpha_vantage: 

  • Offers financial data APIs for developers and is a Python wrapper for these APIs. 
  • Offers historical and real time data for many financial instruments. 
  • Offers a simple and user-friendly interface for accessing financial data. 

zvt: 

  • Is designed for analysis, trading strategy development, and financial data collection.  
  • Allows users to aggregate data from different sources. 
  • Customize the data in different ways like format, calculation, and frequency.  
  • Offers a backtesting engine to test their trading strategies using historical data. 

MachineLearningStocks: 

  • Is designed to be highly extensible. 
  • Is an intuitive template project applying machine learning to making stock predictions.    
  • Allows to acquire fundamental historical data like predictors or features.   
  • Can use a machine learning model to learn from and preprocess data.    

Personae: 

  • Helps with implementation of Supervised Learning and Deep Reinforcement Learning for Quantitative Trading.   
  • Helps create and manage character profiles in novels, role-playing games, or other projects.   
  • Help writers create well-rounded characters with motivations, behaviors, and consistent traits. 

stockstats: 

  • Offers a collection of methods for calculating different technical indicators for financial data.    
  • Supports different financial data formats like pandas dataframe, numpy array, and CSV.  
  • Is a useful tool for financial analysts and traders who want to analyze financial data. 
  • Also, it can help make informed decisions based on technical analysis. 

openctp: 

  • Is used to develop trading systems that use the CTP protocol.   
  • Offers an easy-to-use interface to connect to the CTP trading platform. 
  • Helps retrieve real-time market data and send and manage orders.    
  • Robust logging and error handling capabilities to help identify and resolve issues. 

fooltrader: 

  • Is a Python library for retrieving, processing, and analyzing financial market data.  
  • Helps collect and process data from company filings, stock prices, and news articles. 
  • Support for backtesting trading strategies using historical market data. 

This kandi kit on Fediverse applications helps you build federated social applications like Twitter. LinkedIn, Good Reads, Instagram, Reddit, and many more alternatives based on the ActivityPub protocol. You can use these popular open source libraries, such as Mastodon, PeerTube, WriteFreely, Plume, Owncast, Pixelfed, Misskey, BookWyrm, and others, to build your applications across micro, macro blogging, writing, reviews, podcasts, link aggregators, and professional networks.


A federated social network is a type of social network comprising multiple different providers or platforms. Instead of being controlled by a single company or organization, it is decentralized and distributed across these different providers. It enables interoperability among multiple social networks in a transparent way. The focus is on data exchange, and different networks adopt one unified data architecture so that a robust, heterogeneous network-of-networks can emerge.


Federated social networks solve issues commonly found in traditional social networking platforms, such as lack of user control and limited diversity in services. By joining a federated social network, you can select from various profile providers or even host your own server. This allows for greater innovation and flexibility. Additionally, profiles on different servers can communicate with each other seamlessly.


A federated social network comprises multiple independent services that communicate with each other using standard protocols. This allows users to interact with friends on different social networks without joining the same one. In other words, users from different social websites can communicate with each other seamlessly.




ActivityPub is a decentralized social networking protocol based on the ActivityPump protocol from Pump.io. It offers a client/server API for managing content and a server-to-server API for delivering notifications and content between federated servers. ActivityPub is recognized as an official standard by the World Wide Web Consortium’s (W3C) Social Web Networking Group.


ActivityPub is a protocol that allows different social media platforms to communicate with each other. It does this by providing a standardized way for platforms to create, update and delete content and deliver notifications and content between servers. This means that users on one platform can interact with users on another platform that implements the ActivityPub protocol.


For example, Alice is on a social media platform called “SocialA” and Bob is on another platform called “SocialB”. Both SocialA and SocialB implement the ActivityPub protocol. This means that Alice can follow Bob’s account on SocialB from her account on SocialA. When Bob posts something on SocialB, Alice will see it in her feed on SocialA. Similarly, when Alice likes or comments on Bob’s post from her SocialA account, Bob will see the like or comment on his SocialB account.


This is possible because both platforms use the same standardized communication method through the ActivityPub protocol.


Here are some cool open source applications to build micro, and macro blogging, writing, reviews, podcasts, link aggregators, and professional networks.


Here are the top NodeJS MongoDB libraries you can use to offer features to connect and manage connections to MongoDB databases, like encryption and authentication options. The features of MongoDB libraries depend on the programming language and the specific libraries used. It supports MongoDB’s GridFS feature, which allows storing and retrieving binary data and large files.  


MongoDB library offers an easy-to-use interface for performing basic CRUD operations on the MongoDB collections. You can also get features for using MongoDB’s powerful Aggregation Framework for performing advanced data analysis and queries. This library provides schema validation to ensure data confirms a specific format or rule. It offers features that help create and manage indexes on MongoDB collections to optimize query performance. It offers support for MongoDB’s sharding and replication features, which will allow for high scalability and availability of the database. It also offers features for debugging and testing applications, like mock debuggers and databases.  


Here is the list of the top 22 NodeJS MongoDB libraries that are handpicked to help developers choose the appropriate one as per their requirements:  

prisma: 

  • Is a next-generation ORM (Object Relational Mapping) with tools like Prisma Studio, Migrate, and Client. 
  • Can be used in any NodeJS or TypeScript backend applications, like microservices and serverless applications, like GraphQL API, gRPC API, REST API, and anything that requires a database.  
  • Allows developers to define their application models in an intuitive data modeling language connected to a database and will define a generation. 

mongoose: 

  • Is a MongoDB object modeling tool designed for working in an asynchronous environment that supports Deno and NodeJS. 
  • For delivering commercial maintenance and support for open source dependencies, you can use Tidelift for building your applications.  
  • Buffers all the commands until it is connected to the database so that you do not have to wait until it connects to MongoDB for defining models, running queries, and many more. 

reaction: 

  • Is a headless commerce platform, API-first, built using MongoDB, GraphQL, and NodeJS, which plays nicely with Docker, Kubernetes, and npm.  
  • Returns data in split seconds, and quicker queries mean quicker web pages. 
  • A flexible plugin system will allow you to pick and select which integrations work best for you.  

node-elm: 

  • Is a package that offers functionality for using the Elm programming language with NodeJS.  
  • You can compile Elm code to JavaScript, run tests, and generate documentation.  
  • Offers various utility functions for working with Elm code, like parsing source files and generating Elm code programmatically.  

node-mongodb-native: 

  • Is the official MongoDB driver for NodeJS, maintained and developed by MongoDB Inc. 
  • Is designed to be scalable and performant, with support for features like streaming cursors and connection pooling. 
  • Also offers various utility functions for working with the binary format and BSON used by MongoDB. 

payload: 

  • Is a CMS designed for developers from the ground up to deliver what they require to build a great digital product.  
  • Provides you with everything you need but takes a step back and lets you build what you want in JavaScript or TypeScript with no unnecessary complexity brought by GUIs.  
  • Completely control the admin panel by using your own React components and will swap out fields or even entire views easily.  

nodeclub: 

  • Is a free and open-source community platform built on top of the NodeJS platform. 
  • A web-based discussion and forum board allows users to create and participate in discussions on diverse topics.  
  • Supports features like user authentication and authorization, search functionality, and email notifications. 

mikro-orm: 

  • Is an open source TypeScript ORM which simplifies working with databases in NodeJS applications. 
  • Supports different databases like PostgreSQL, SQLite, MongoDB, and MySQL. 
  • You can easily define your data models using TypeScript decorators and classes and perform common CURD operations on your data with a few lines of code.  

mean: 

  • Is a full-stack JavaScript open source solution that provides a solid starting point for NodeJS, AngularJS, MongoDB, and Express based applications. 
  • Builds a robust framework to support daily development requirements, which will help developers use better practices when working with JavaScript components.  
  • Offers reusable tools, guidelines, and modules to help developers build web applications efficiently and quickly. 

mongo-express: 

  • Is a web-based administrative UI for MongoDB, a popular NoSQL database that provides an intuitive GUI that allows users to view and edit database indexes, documents, and collections.  
  • You can perform common administrative tasks like deleting or creating collections and databases, managing users and permissions, and removing or adding indexes. 
  • Allows you to execute MongoDB shell commands directly from the interface.  

project_mern_memories: 

  • Is a code repository that contains the source code for web applications built using the MERN stack.  
  • Is a popular web development stack that includes four technologies, Express, NodeJS, MongoDB, and React. 
  • Includes features like image uploading and storage, pagination, and user authorization and authentication.  

uptime: 

  • Monitor thousands of websites, check the presence of a pattern in the response body and tweak the frequency of monitoring on a per-check basis up to the second.  
  • Helps receive notifications whenever a check goes down by email, on the console, and screen. 
  • Can record availabilities statistics for further reporting and detailed uptime reports with animated charts.  

builderbook: 

  • Is a comprehensive set of resources and tools for helping developers build and launch web applications efficiently and quickly. 
  • Includes various components and features which can be customized and integrated into any web application, like user management and authentication, email handling, and payment processing.  
  • Is focused on helping developers create a high-quality web application using modern technologies and best practices. 

DoraCMS: 

  • Is a free and open source CMS built on top of the NodeJS platform, which offers a web-based administrative interface for managing users, site settings, and content.  
  • Is designed to be extensible and modular with a flexible plugin option, allowing developers to add new functionality and features to the CMS.  
  • Offers a RESTful API that can be used for interacting with the CMS programmatically.  

mongodb-memory-server: 

  • Is an open source NodeJS library which offers an in-memory MongoDB server for development and testing purposes. 
  • Allows you to quickly spin up a MongoDB server instance in memory without requiring a separate MongoDB configuration or installation.  
  • You can write tests and develop applications that rely on MongoDB without requiring a separate MongoDB instance running on a remote server or your local machine.  

monk: 

  • Is a lightweight MongoDB driver for NodeJS, offering an easy-to-use and simple API for interacting with MongoDB databases.  
  • Offers a high-level API that abstracts away many low-level details for working with MongoDB making it easy for developers to get started with minimal setup.  
  • Provides a simple and flexible query API that allows you to build any query easily.  

mongojs: 

  • Is a lightweight NodeJS library that offers a simple API for interacting with MongoDB databases.  
  • Allows you to perform common database operations like map-reduce, CRUD operations, etc.  
  • Offers an intuitive and simple API that is easy to learn and use and supports various features like replication, sharding, and authentication. 

myDrive: 

  • Is an open source cloud file storage server for hosting myDrive on your server or trusted platform and then accessing myDrive through your web browser.  
  • Uses MongoDB for storing folder/file metadata and will support multiple databases for storing the file chunks, like the Filesystem and Amazon S3. 
  • Is built using TypeScript and NodeJS and can help upload files, google drive support, and download files. 

node-login: 

  • Is a NodeJS module that offers a simple authentication system for web applications. 
  • Is designed to be easy to use and customize and supports various authentication strategies, like password authentication and email, two-factor authentication, and OAuth authentication. 
  • Includes features like email verification, user profile management, password hashing, and session management. 

mongorito: 

  • Is based on Redux, which opens the doors for customizing anything from model’s state to the behavior of core methods.  
  • Every model instance has a different Redux store, ensuring isolation between other models and easy extensibility.  
  • Ships with a barebones model with basic set/get, remove/save, and querying functionality and lets you be in control of what is included. 

nodercms: 

  • Is an open source CMS built on top of the NodeJS platform, which offers a web-based administrative interface for managing users, content, and other site settings.  
  • You can create and manage posts, pages, and other content types and supports features like theme customization, plugin support, user authorization, and authentication.  
  • Is designed to be extensible and modular, with a flexible plugin architecture that allows developers to add new functionality and features to the CMS. 

rest-api-nodejs-mongodb: 

  • Is a ready-to-use boilerplate for REST API Development with Express, MongoDB, and NodeJS. 
  • Offers pre-defined response structures with a proper status code, including CORS. 
  • Includes API collection for Postman, linting with Eslint, CI with Travis CI, and test cases with Chai and Mocha. 

Here are some of the famous NodeJs CMS Libraries. NodeJs CMS Libraries can be used in Website and Blog Development, Content Management, E-commerce and Shopping Carts, Data Visualization, and User Management. 


Nodejs CMS Libraries are libraries that allow developers to create content management systems (CMS) using the Node.js JavaScript runtime. Node.js is an open-source, cross-platform runtime environment for developing server-side and networking applications. Node.js CMS libraries are used to create rich and dynamic content for websites and applications. 


Let us look at these libraries in detail below. 

strapi 

  • Optimized for speed, allowing developers to quickly publish content and build applications. 
  • Supports both frontend and backend development. 
  • Built-in support for authentication, authorization, and other security features.

sails 

  • Automatic endpoint and model generation. 
  • Built-in ORM support. 
  • Real-time communication. 

directus 

  • Provides a powerful RESTful API. 
  • Provides a built-in, multilingual interface. 
  • Allows you to easily create custom user roles. 

keystone-classic 

  • Flexible Content Modeling. 
  • Automated Admin UI Generation. 
  • Simple Integration. 

feathers 

  • Supports real-time communication with its built-in socket.io integration. 
  • Makes use of hooks to allow developers to customize their applications. 
  • Written in JavaScript and can be used on servers, browsers, and mobile devices. 

apostrophe 

  • Asset manager allows users to store, organize, and access digital files.  
  • Integrated search capabilities make finding content and information on the website easy.  
  • Drag-and-drop page builder makes creating complex, multi-page websites easy without coding knowledge. 

locomotive 

  • Powerful templating engine. 
  • Flexible support for multiple database engines. 
  • Built-in authentication and authorization. 

Here are the best open source NodeJS CMS libraries for your applications. You can use these tools and components for developing highly scalable web applications.   


Using a NodeJS CMS library will help you build a fast and high performance self-hosted backend for your application with pre-existing things like an admin dashboard, file management, authentication for administration, content CRUD, and so on. There are several types of CMS libraries available, like Headless CMS, NodeJS specific CMS, Traditional CMS, and Hybrid CMS. 


We have handpicked the top and trending NodeJS CMS libraries for your next project below.  

starpi:  

  • Used for developing systematic and well-configured web and mobile applications.  
  • Comes with an intuitive content management system that will simplify the content development architecture and provides a wonderful experience.  
  • Features a rich markdown editor which can engineer different content types.  

Ghost:  

  • Used for powerful blogging platforms.  
  • User-friendly interface where you can work for hours of editing without any distractions.  
  • Comes with built-in SEO features and social sharing options.  

apostrophe:  

  • Used for creating and maintaining websites and web applications of all categories.  
  • Comes with versatile content editing tools for easy maintenance of your content.  
  • Comes with Drag and Drop feature for organizing components and comes with a solid text editor powered by CKEditor.  

keystone-classic:  

  • Used for developing RESTful APIs, platforms, online forums, and e-commerce applications.  
  • MVC architecture makes it easy to build the required structure for rendered data.  
  • Is extremely lightweight and will provide a rich API for database administration.  

reaction:  

  • Uses multiple solid platforms like MongoDB, CoffeeScript, and Meteor.   
  • Will let your users have a hi-tech shopping experience and provide them with home-grown, budget-friendly, and zero vendor lock-in solutions.  
  • Can easily integrate with any service provider because it comes with a highly effective tech stack providing easy integration.  

relax:  

  • Comes with a live page builder and provides simple and easy methods for binding data with components.  
  • Use the Sharp module for resizing the images quickly.  
  • Comes with a clean dashboard for presenting the least amount of data you need to access different actions.  

calipso:  

  • Modular CMS that makes it easy to handle in-depth features of the system.  
  • Allows you to drag content from any source as it offers a scheduler and provides modules to the core.  
  • Do not support catching yet but can take 180 hits per second.  

pencilblue:  

  • A very responsive platform for creating all types of websites.  
  • Can be used for developing any plugin networks that are highly moderated and work directly with your system’s core functions.  
  • Offers built-in support for Bootstrap, Angular JS, and JQueryUI.  

Buckets-JS:  

  • Offers innovative segmentation technology which can transform the communication between the upper hand and their online customers.  
  • Provides structured and organized pathways for content management.  
  • Allows you to add, delete, or update your content quickly.  

If you are a Bitcoin enthusiast, then you need to know about the importance of Python Bitcoin Wallet libraries. These libraries help you to make your own wallet and store your Bitcoins. They are very useful for developers who want to create their own Bitcoin wallet application. The freqtrade library is one of the most popular open-source crypto trading bot used to write Bitcoin wallets in Python. The Electrum library has been around for quite some time and has many features like two-factor authentication, multi-signature support, HD wallets; Plutus - automated bitcoin wallet collider and more! Discover 13 of the top and Popular Python Bitcoin Wallet open-source libraries for developers:

Check out 8 innovative open-source projects on clean energy. 

Trending Discussions on Web Site

Create new color scheme for dark-light mode in bootstrap sass

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QUESTION

Create new color scheme for dark-light mode in bootstrap sass

Asked 2022-Jan-16 at 19:50

I want to create dark mode for a web site which use bootstrap. I have to add new root class which includes all boostrap colors. Here is my colors.scss:

1$primary:#065FC6;
2$secondary:#263C5C;
3$success:#49C96D;
4$danger:#FD7972;
5$warning:#FF965D;
6$light:#F8F8F8;
7$body-color: #263C5C;
8
9$custom-colors: (
10  "brd-default": $body-color
11  );
12  
13

I want create new class like this:

1$primary:#065FC6;
2$secondary:#263C5C;
3$success:#49C96D;
4$danger:#FD7972;
5$warning:#FF965D;
6$light:#F8F8F8;
7$body-color: #263C5C;
8
9$custom-colors: (
10  "brd-default": $body-color
11  );
12  
13:root.dark{
14    // override colors and classes for dark mode
15    $primary:#012345;
16    $secondary:#111111;
17    $success:#222222;
18}
19

So how can i copy and paste all bootstrap colors for new color scheme?

If i can add colors, i will change HTML class so my root(color scheme) will be:

enter image description here

in my styles.scss:

1$primary:#065FC6;
2$secondary:#263C5C;
3$success:#49C96D;
4$danger:#FD7972;
5$warning:#FF965D;
6$light:#F8F8F8;
7$body-color: #263C5C;
8
9$custom-colors: (
10  "brd-default": $body-color
11  );
12  
13:root.dark{
14    // override colors and classes for dark mode
15    $primary:#012345;
16    $secondary:#111111;
17    $success:#222222;
18}
19@import "./colors";// custom colors
20@import "bootstrap/scss/functions";
21@import "bootstrap/scss/variables";
22@import "bootstrap/scss/utilities";
23

ANSWER

Answered 2021-Aug-07 at 20:32

As explained here, there's no way to attach a class to :root. However, you don't need this to achieve what you want.

Simply make a dark class then you can add that as desired to the html or body tag.

Make all the needed theme color changes inside .dark{}, and then @import "bootstrap". When .dark doesn't exist on the body, the theme colors will return to Bootstrap defaults.

1$primary:#065FC6;
2$secondary:#263C5C;
3$success:#49C96D;
4$danger:#FD7972;
5$warning:#FF965D;
6$light:#F8F8F8;
7$body-color: #263C5C;
8
9$custom-colors: (
10  "brd-default": $body-color
11  );
12  
13:root.dark{
14    // override colors and classes for dark mode
15    $primary:#012345;
16    $secondary:#111111;
17    $success:#222222;
18}
19@import "./colors";// custom colors
20@import "bootstrap/scss/functions";
21@import "bootstrap/scss/variables";
22@import "bootstrap/scss/utilities";
23@import "functions";
24@import "variables";
25@import "mixins";
26
27
28.dark {
29
30    /* redefine theme colors for dark theme */
31    $primary: #012345;
32    $secondary: #111111;
33    $success: #222222;
34    $dark: #000;
35    
36    $theme-colors: (
37        "primary": $primary,
38        "secondary": $secondary,
39        "success": $success,
40        "danger": $danger,
41        "info": $indigo,
42        "dark": $dark,
43        "light": $light,
44    );
45
46    /* redefine theme color variables */
47    @each $color, $value in $theme-colors {
48        --#{$variable-prefix}#{$color}: #{$value};
49    }
50
51    /* redefine theme color rgb vars (used for bg- colors) */
52    $theme-colors-rgb: map-loop($theme-colors, to-rgb, "$value");
53    @each $color, $value in $theme-colors-rgb {
54        --#{$variable-prefix}#{$color}-rgb: #{$value};
55    }
56
57    $body-color: #eeeeee;
58    $body-bg: #263C5C;
59    
60    --#{$variable-prefix}body-color: #{$body-color};
61    --#{$variable-prefix}body-bg: #{$body-bg};
62      
63    @import "bootstrap";
64}
65
66

Source https://stackoverflow.com/questions/68667437

QUESTION

The "(optional)" marker in cppreference.com documentation

Asked 2022-Jan-04 at 14:27

Last week, I had a discussion with a colleague in understanding the documentation of C++ features on cppreference.com. We had a look at the documentation of the parameter packs, in particular the meaning of the (optional) marker:

Enter image description here

(Another example can be found here.)

I thought it means that this part of the syntax is optional. Meaning I can omit this part in the syntax, but it is always required to be supported by the compiler to comply with the C++ standard. But he stated that it means that it is optional in the standard and that a compiler does not need to support this feature to comply to the standard. Which is it? Both of these explanations make sense to me.

I couldn't find any kind of explanation on the cppreference web site. I also tried to google it but always landed at std::optional...

ANSWER

Answered 2021-Aug-21 at 20:22

It means that particular token is optional. For instance both these declarations work:

1template <class... Args>
2void foo();
3
4template <class...>
5void bar();
6

Source https://stackoverflow.com/questions/68876460

QUESTION

Why does this footer element just disappear when it has fixed positioning?

Asked 2022-Jan-02 at 08:12

I'm experimenting with CSS in a codecademy project, and I noticed that when I set a footer to have fixed positioning (with no left/right/top/bottom properties set), it just disappears. I would expect it to just shrink the way it does with absolute positioning, but it doesn't. Without fixed positioning the footer is there where it should be, but with it, it's gone. Why is it behaving this way?

The footer in question is selected in the CSS in the footer ruleset.

Here's the codepen: https://codepen.io/megas4ever/pen/ExwEEzv

And here's the full code:

1    <!DOCTYPE html>
2    <html>
3      
4      <head>
5        <link href='https://fonts.googleapis.com/css?family=Raleway:400, 600' rel='stylesheet' type='text/css'>
6        <link href='style.css' rel='stylesheet' type='text/css'/>
7<style>  
8
9html, body {
10      margin: 0;
11      padding: 0;
12    }
13    
14    header {
15      background-color: #333333;
16      position: fixed;
17      top: 0;
18      width: 100%;
19      z-index: 1;
20    }
21    
22    nav {
23      margin: 0;
24      padding: 20px 0;
25    }
26    
27    nav li {
28      display: inline-block;
29      width: 80px;
30      color: #fff;
31      font-family: 'Raleway', sans-serif;
32      font-weight: 600;
33      font-size: 12px;
34    }
35    
36    main {
37      text-align: center;
38      position: relative;
39      top: 80px;
40    }
41    
42    main h1 {
43      color: #333;
44      font-family: 'Raleway', sans-serif;
45      font-weight: 600;
46      font-size: 70px;
47      margin-top: 0px;
48      padding-top: 80px;
49      margin-bottom: 80px;
50      text-transform: uppercase;
51    }
52    
53    footer {
54      background-color: #333;
55      color: #fff;
56      padding: 30px 0;
57      position: fixed;
58    }
59    
60    footer p {
61      font-family: 'Raleway', sans-serif;
62      text-transform: uppercase;
63      font-size: 11px;
64    }
65    
66    .container {
67      max-width: 940px;
68      margin: 0 auto;
69      padding: 0 10px;
70      text-align: center;
71    }
72    
73    .jumbotron {
74      height: 800px;
75      background-image: url("https://content.codecademy.com/projects/broadway/bg.jpg");
76      -webkit-background-size: cover;
77      -moz-background-size: cover;
78      -o-background-size: cover;
79      background-size: cover;
80    }
81    
82    .btn-main {
83      background-color: #333;
84      color: #fff;
85      font-family: 'Raleway', sans-serif;
86      font-weight: 600;
87      font-size: 18px;
88      letter-spacing: 1.3px;
89      padding: 16px 40px;
90      text-decoration: none;
91      text-transform: uppercase;
92    }
93    
94    .btn-default {
95      font-family: 'Raleway', sans-serif;
96      font-weight: 600;
97      font-size: 10px;
98      letter-spacing: 1.3px;
99      padding: 10px 20px;
100      text-decoration: none;
101      text-transform: uppercase;  
102      margin-bottom: 20px;      
103    }
104    
105    .supporting {
106      padding-top: 80px;
107      padding-bottom: 100px;
108    }
109    
110    .supporting .col {
111      font-family: 'Raleway', sans-serif;
112      text-align: center;
113      display: inline-block;
114      width: 200px;
115      height: 200px;
116    }
117    
118    .supporting img {
119      height: 32px;
120    }
121    
122    .supporting h2 {
123      font-weight: 600;
124      font-size: 23px;
125      text-transform: uppercase;
126    }
127    
128    .supporting p {
129      font-weight: 400;
130      font-size: 14px;
131      line-height: 20px;
132      padding: 0 20px;
133      margin-bottom: 20px;
134    }
135    
136    .supporting a {
137      background-color: white;
138      color: #333333;
139      font-family: 'Raleway', sans-serif;
140      font-weight: 600;
141      font-size: 12px;
142      letter-spacing: 1.3px;
143      text-decoration: none;
144      text-transform: uppercase;
145      padding: 10px;
146      margin-bottom: 10px;
147      border: 2px solid #333333; 
148    }
149    
150    @media (max-width: 500px) {
151      main h1 {
152        font-size: 50px;
153        padding: 0 40px;
154      }
155    
156      .supporting .col {
157        width: 100%;
158      }
159    }
160
161</style>
162      </head>
163    
164      <body>
165        
166        <header>
167            <nav>
168              <ul>
169                <li> About </li> <li> Work </li> <li> Team </li> <li> Contact </li>
170              </ul>
171            </nav>
172        </header>
173    
174        <main>
175          <div class="jumbotron">
176            <div class="container">  
177              <h1>We are Broadway</h1>
178              <a href="#" class="btn-main"> Get Started </a>
179            </div>
180          </div>
181        </main>
182    
183        <section class="supporting">
184          <div class="container">
185            
186            <div class="col">
187              <img src="https://content.codecademy.com/projects/broadway/design.svg">
188              <h2>Design</h2>
189              <p>Make your projects look great and interact beautifully.</p>
190              <a href="#"> Learn More</a><br>
191            </div>
192            
193            <div class="col">
194              <img src="https://content.codecademy.com/projects/broadway/develop.svg">
195              <h2>Develop</h2>
196              <p>Use modern tools to turn your design into a web site</p>
197              <a href="#"> Learn More</a><br>
198            </div>
199            
200            <div class="col">
201              <img src="https://content.codecademy.com/projects/broadway/deploy.svg">
202              <h2>Deploy</h2>
203              <p>Use modern tools to turn your design into a web site</p>
204              <a href="#"> Learn More</a><br>
205            </div>
206            
207          </div>
208        </section>
209    
210        <footer>
211          <div class="container">
212            <p>© Broadway 2017</p>
213          </div>
214        </footer>
215        
216      </body>
217    </html>
218

ANSWER

Answered 2022-Jan-02 at 04:55

Well, you've kind of hinted at the problem yourself already.

I noticed that when I set a footer to have fixed positioning (with no left/right/top/bottom properties set), it just disappears.

Just because you haven't provided left/right/top/bottom properties, doesn't mean they are not in effect.

In this case, the default values (which most likely reflect the effective top/left values with the default position: static) are just not ideal.

Since the footer takes up the full width of the screen, the left value likely defaults to 0; this is fine and that's not the source of the problem. But, since the footer is located on the bottom of your site, its auto/default top value max well be like 2000px -> you have to scroll down to even be able to see it.

Once you enabled fixed positioning, and didn't provide any top value yourself, that number would still be top: 2000px. And since it's now fixed in place, scrolling has no effect on it, which means its permanently located outside of your viewport. If your browser window was to be >2000px high, you would be able to see it, just hovering along by itself way below the rest of the site.

Source https://stackoverflow.com/questions/70553619

QUESTION

How to store text of tag "a" of a div in an arrray

Asked 2021-Dec-24 at 16:07

I'm working on API, which extracts data from a web site. and the website is like - >

1<div id="mainContainer">
2<a class="item">text1</a>
3<a class="item">text2</a>
4<a class="item">text3</a>
5<a class="item">text4</a>
6<a class="item">text5</a>
7</div>
8

I want to store all text in an object like {"item1":"text1","item2":"text2"......}; here is what I'm doing

1<div id="mainContainer">
2<a class="item">text1</a>
3<a class="item">text2</a>
4<a class="item">text3</a>
5<a class="item">text4</a>
6<a class="item">text5</a>
7</div>
8var prediction = $('#mainContainer > item');
9console.log(prediction);
10

output

1<div id="mainContainer">
2<a class="item">text1</a>
3<a class="item">text2</a>
4<a class="item">text3</a>
5<a class="item">text4</a>
6<a class="item">text5</a>
7</div>
8var prediction = $('#mainContainer > item');
9console.log(prediction);
10<a class="item">text1</a><a class="item">text2</a><a class="item">text3</a>....
11

How do I do it ??

ANSWER

Answered 2021-Dec-24 at 11:07

You can create an object and then populate it with an each

1<div id="mainContainer">
2<a class="item">text1</a>
3<a class="item">text2</a>
4<a class="item">text3</a>
5<a class="item">text4</a>
6<a class="item">text5</a>
7</div>
8var prediction = $('#mainContainer > item');
9console.log(prediction);
10<a class="item">text1</a><a class="item">text2</a><a class="item">text3</a>....
11values = {};
12$('#mainContainer a.item').each((i,x) => values['item'+(i+1)] = $(x).text())
13

Source https://stackoverflow.com/questions/70471234

QUESTION

Is there any way we can use flex instead of float to keep the boxes right and left in between the content?

Asked 2021-Dec-08 at 08:53

I want to create a UI something like this example image by using flex and without negative margin -

enter image description here

The challenge is that I have used float and negative margin to create the same layout. But I don't want to use a negative value to set the green div outside the content. Also, I have used the float to keep the contents around the green boxes. But I want to use flex instead of float.

So, to summarize my question - Create a reference layout that will not use any float or negative value to align the boxes in green.

I have added the code snapshot here to take a look at my HTML and CSS.

Any help would be appreciated. Thanks in Advance.

1.container {
2  width: 50%;
3  text-align: justify;
4  margin: auto;
5}
6
7.box {
8  background-color: green;
9  width: 20%;
10  padding: 15px;
11  margin: 15px;
12}
13
14.right {
15  float: right;
16  margin-right: 0 !important;
17  margin-right: -15% !important;
18}
19
20.left {
21  float: left;
22  margin-left: 0 !important;
23  margin-left: -15% !important;
24}
1.container {
2  width: 50%;
3  text-align: justify;
4  margin: auto;
5}
6
7.box {
8  background-color: green;
9  width: 20%;
10  padding: 15px;
11  margin: 15px;
12}
13
14.right {
15  float: right;
16  margin-right: 0 !important;
17  margin-right: -15% !important;
18}
19
20.left {
21  float: left;
22  margin-left: 0 !important;
23  margin-left: -15% !important;
24}<div class="container">
25  <div class="paragrah">
26    electronictypesetting,remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheetscontainingLorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker includingversionsof Lorem
27    Ipsum. It is a long established fact that a reader will be distracted by the readable content of apage
28
29    <div class="box right"> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque porttitor aliquet leo, et suscipit nulla sodales at. Praesent dictum imperdiet lacus nec pharetra.
30    </div>
31
32    when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distributionofletters, as opposed to using 'Content here, content here', making it look like readable English. Manydesktoppublishing packages and web page
33    editors now use Lorem Ipsum as their default model text, and a search for'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over theyears,sometimes by accident, sometimes on purpose (injected humour and
34    the like).Contrary to popular belief, Lorem Ipsum is not simply random text. Ithasroots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. RichardMcClintock, aLatin professor at Hampden-Sydney College in Virginia,
35    looked up one of the more obscure Latin words,consectetur,from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered theundoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus
36    Bonorum et Malorum"(TheExtremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics,verypopular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from alineinsection
37    1.10.32. There are many variations of passages of Lorem Ipsum available, but the majority havesufferedalteration in some form, by injected humour, or randomised words which don't look even slightly believable.Ifyou
38
39    <div class="box left"> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque porttitor aliquet leo, et suscipit nulla sodales at. Praesent dictum imperdiet lacus nec pharetra. Ut ut risus ipsum ac leo auctor convallis.
40    </div>
41
42    are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden inthemiddle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks asnecessary,makingthis the first true generator
43    on the Internet. It uses a dictionary of over 200 Latin words, combined with ahandfulof model sentence structures, to generate Lorem Ipsum which looks reasonable. The generated Lorem Ipsum isthereforealways free from repetition, injected humour, or
44    non-characteristic words etc.he standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested.Sections1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exactoriginalform,accompanied
45    by English versions from the 1914 translation by H. Rackham. But I must explain to you how allthismistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account ofthesystem, and expound the actual teachings
46    of the great explorer of the truth, the master-builder of humanhappiness.No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do notknowhowto pursue pleasure rationally encounter consequences that are
47    extremely painful. Nor again is there anyonewholovesor pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstancesoccurinwhich toil and pain can procure him some great pleasure. To take a trivial example,
48    which of us everundertakeslaborious physical exercise, except to obtain some advantage from it? But who has any right to find faultwith amanwho chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces noresultant
49    pleasure? who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids apain that produces noresultant pleasure?who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids apain that produces noresultant
50    pleasure? who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids apain that produces noresultant pleasure? who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids apain that produces noresultant
51    pleasure? who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids apain that produces noresultant pleasure? who chooses to enjoy a pleasure that has no.
52  </div>
53</div>

ANSWER

Answered 2021-Dec-08 at 08:42

No.

Flexbox is for laying boxes out in a row or column.

Float is for making text wrap around boxes.

You need float for this.

Source https://stackoverflow.com/questions/70271819

QUESTION

Error 400: redirect_uri_mismatch trying to access Google Drive

Asked 2021-Nov-29 at 16:21

I know there are a ton of questions like this already, but none of the answers have helped me. I've listed all the suggested points at the end, please read there to see if I've missed anything.

I'm using the Google Drive C# API, and have a web site (Blazor, .NET5 in case it makes any difference) that has been working fine. I was using the client's Google credentials for this, had downloaded a JSON file (following instructions here) and all was well. When I first ran the web site in Visual Studio, I got the Google auth screen, in which I entered his email and password, and it worked. This created a JSON file in my web site which then allowed me to run the site next time without having to auth again.

In the credentials JSON file, I added the redirect URI, using the URI that VS uses when I debug the site. This gave me JSON file like this...

1{
2  "web": {
3    "client_id": "xxxxxxxxxxxxxxxx",
4    "project_id": "xxxxxxxxxxxxxxx",
5    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
6    "token_uri": "https://oauth2.googleapis.com/token",
7    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
8    "client_secret": "xxxxxxxxxxxxxxxxxxxxx",
9    "redirect_uris": [
10      "https://localhost:44378/authorize/",
11      "https://localhost:44378/authorize"
12    ],
13    "javascript_origins": [
14      "https://developers.google.com"
15    ]
16  }
17}
18

The code I use to create the Google service is quite closely copied from their .NET Quickstart (step 2)...

1{
2  "web": {
3    "client_id": "xxxxxxxxxxxxxxxx",
4    "project_id": "xxxxxxxxxxxxxxx",
5    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
6    "token_uri": "https://oauth2.googleapis.com/token",
7    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
8    "client_secret": "xxxxxxxxxxxxxxxxxxxxx",
9    "redirect_uris": [
10      "https://localhost:44378/authorize/",
11      "https://localhost:44378/authorize"
12    ],
13    "javascript_origins": [
14      "https://developers.google.com"
15    ]
16  }
17}
18UserCredential credential;
19using (FileStream stream = new(credJson, FileMode.Open, FileAccess.Read)) {
20  credential = GoogleWebAuthorizationBroker
21    .AuthorizeAsync(GoogleClientSecrets.FromStream(stream).Secrets, 
22      new[] { DriveService.Scope.Drive }, 
23      "user", 
24      CancellationToken.None, 
25      new FileDataStore(tokenPath, true))
26    .Result;
27}
28DriveService service = new(new BaseClientService.Initializer {
29  HttpClientInitializer = credential,
30  ApplicationName = ""
31});
32

That all worked fine. Now the client has set up another Google account specially for this site, and wants me to use that instead. No problem, I went to the Google developer console for the new account and did the same as before, ie configured the OAuth screen, created a new OAuth credential, downloaded the JSON file, added the redirect URIs as shown above, and replaced the existing JSON file with the new one.

When I try to debug, I get the error shown in the title.

Having read loads of other questions about this error, I have checked and double-checked the following...

  • The URI that VS uses never changes. Specifically, the port is always 44378
  • The base URI in the Google console and in my JSON file is the exact URI in the browser address bar when I'm debugging, I just added /authorize with and without the trailing slash
  • The URI that the Google window shows is of the form http://127.0.0.1:59777/authorize/, although the port number changes every time. It is not picking up the port that VS uses. Adding the one Google shows is a waste of time, as next time I try, it shows a different port
  • I have tried using 127.0.0.1 instead of localhost
  • I have tried removing the port altogether from the redirect URI
  • I have tried setting the redirect URIs in both the Google console (and waiting for them to update in case this was needed) and in the JSON file
  • When I created the credentials, I set is as a web project, not a desktop one

None of this helped, I always get the same error.

The weird thing is that if I now revert my credentials JSON file back to what it was before (with the client's own Google account), I get the same error.

Anyone any ideas? As far as I can see, I've tried everything mentioned in other answers, but still get this error.

ANSWER

Answered 2021-Nov-29 at 16:21

Hmm, reading your (very clear by the way!) question gives me the impression that all the changes you made were in the JSON file, not in the Google console. Correct me if I'm wrong, but I think that could be where you're hitting issues.

My (admittedly limited) experience leads me to believe that the redirect URIs in the JSON file are ignored, and it's the one(s) in the Google console that are used.

Forgive me if you already tried this, but try adding the following four URIs to your console, and then downloading the JSON file again...

1{
2  "web": {
3    "client_id": "xxxxxxxxxxxxxxxx",
4    "project_id": "xxxxxxxxxxxxxxx",
5    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
6    "token_uri": "https://oauth2.googleapis.com/token",
7    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
8    "client_secret": "xxxxxxxxxxxxxxxxxxxxx",
9    "redirect_uris": [
10      "https://localhost:44378/authorize/",
11      "https://localhost:44378/authorize"
12    ],
13    "javascript_origins": [
14      "https://developers.google.com"
15    ]
16  }
17}
18UserCredential credential;
19using (FileStream stream = new(credJson, FileMode.Open, FileAccess.Read)) {
20  credential = GoogleWebAuthorizationBroker
21    .AuthorizeAsync(GoogleClientSecrets.FromStream(stream).Secrets, 
22      new[] { DriveService.Scope.Drive }, 
23      "user", 
24      CancellationToken.None, 
25      new FileDataStore(tokenPath, true))
26    .Result;
27}
28DriveService service = new(new BaseClientService.Initializer {
29  HttpClientInitializer = credential,
30  ApplicationName = ""
31});
32http://127.0.0.1/authorize/
33http://127.0.0.1/authorize
34https://127.0.0.1/authorize/
35https://127.0.0.1/authorize
36

As you've realised, you seem to need to include versions with and without a trailing slash. I've found you often need to include the non-SSL versions as well. Don't ask me why, as VS uses https when debugging, but this is Google!

Once you've updated the console, download the JSON and include the new version in your app.

Anyway, try that and see if it works.

Source https://stackoverflow.com/questions/70086449

QUESTION

Azure App Service .net6 Deploy - Error: EISDIR: illegal operation on a directory, open '/home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE'

Asked 2021-Nov-28 at 13:03

I updated my Asp.net core Blazor WebAssembly app to .net 6. Everything is fine, but the deploy from github actions doesn't work and throws this error:

1...
2Copying file: 'Microsoft.AspNetCore.ApiAuthorization.IdentityServer.dll'
3Copying file: 'Microsoft.AspNetCore.Authentication.JwtBearer.dll'
4Omitting next output lines...
5Error: EISDIR: illegal operation on a directory, open '/home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE'
6An error has occurred during web site deployment.
7Kudu Sync failed
8\n/opt/Kudu/Scripts/starter.sh "/home/site/deployments/tools/deploy.sh"
9Error: Failed to deploy web package to App Service.
10Error: Deployment Failed with Error: Package deployment using ZIP Deploy failed. Refer logs for more details.
11

What could be a problem here?

  • app works on local
  • I updated the azure app to .net6 in configuration
  • I tried to restart the app
  • the app is in Central US region

EDIT/SOLUTION:

Previously the path to licence file was: /home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE/LICENSE new file was without the LICENSE dir. So when the new version of app arrived it tried to update the LICENSE file, which was actually a directory. Removing LICENSE/LICENSE helped.

ANSWER

Answered 2021-Nov-15 at 05:26
  • On Linux, it's important that any bash deployment scripts that get run have Unix line endings (LF) and not Windows line endings (CRLF).

  • Kuduscript will generate scripts with platform-appropriate line endings, but if those scripts are modified, or if you provide your own custom deployment scripts, it's important to make sure that your editor doesn't change the line endings.

  • If something seems off with your deployment script, you can always use the Kudu console to delete the contents of /home/site/deployments/tools.

  • This is the directory where Kudu caches kuduscript-generated deployment scripts. On the next deployment, the script will be regenerated.

  • The error you're currently seeing is a Kudu issue with running node/npm for deployments.

  • The easiest and fastest resolution for what you are currently seeing is to specify engines.node in your package.json.

Error: EISDIR: illegal operation on a directory, open '/home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE'

EISDIR stands for "Error, Is Directory". This means that NPM is trying to do something to a file but it is a directory. In your case, NPM is trying to "read" a file which is a directory. Since the operation cannot be done the error is thrown.

Three things to make sure here

  1. Make sure the file exists. If it does not, you need to create it. (If NPM depends on any specific information in the file, you will need to have that information there).
  2. Make sure it is in fact a file and not a directory.
  3. It has the right permissions. You can change the file to have all permissions with "sudo chmod 777 FILE_NAME".

Note: You are giving Read, Write and Execute permissions to every one on that file.

Source https://stackoverflow.com/questions/69967124

QUESTION

How to access XML data with Coldfusion

Asked 2021-Oct-22 at 15:46

A client wants me to add a weather forecast to his web site. The official weather report comes in an XML file and I need help accessing some of the elements in the file.

I can download the two XML files that contain the data needed on the site, and I can parse them into ColdFusion XML variables.

I can extract the data I need from the top levels, but it's lower levels that are causing me some heartburn. The XML files contain weather observations and forecasts for every location in the state. We don't need that - we just want to access the data about my client's location.

Here's a sample of the XML data I'm talking about

1<area aac="NSW_PT123" description="Richmond" type="location" parent-aac="NSW_PW005">
2        <forecast-period index="0" start-time-local="2021-10-16T17:00:00+11:00" end-time-local="2021-10-17T00:00:00+11:00" start-time-utc="2021-10-16T06:00:00Z" end-time-utc="2021-10-16T13:00:00Z">
3            <element type="forecast_icon_code">2</element>
4            <text type="precis">Clear.</text>
5            <text type="probability_of_precipitation">5%</text>
6        </forecast-period>
7        <forecast-period index="1" start-time-local="2021-10-17T00:00:00+11:00" end-time-local="2021-10-18T00:00:00+11:00" start-time-utc="2021-10-16T13:00:00Z" end-time-utc="2021-10-17T13:00:00Z">
8            <element type="forecast_icon_code">1</element>
9            <element type="air_temperature_minimum" units="Celsius">7</element>
10            <element type="air_temperature_maximum" units="Celsius">24</element>
11            <text type="precis">Sunny.</text>
12            <text type="probability_of_precipitation">0%</text>
13        </forecast-period>
14        <forecast-period index="2" start-time-local="2021-10-18T00:00:00+11:00" end-time-local="2021-10-19T00:00:00+11:00" start-time-utc="2021-10-17T13:00:00Z" end-time-utc="2021-10-18T13:00:00Z">
15            <element type="forecast_icon_code">1</element>
16            <element type="air_temperature_minimum" units="Celsius">7</element>
17            <element type="air_temperature_maximum" units="Celsius">28</element>
18            <text type="precis">Sunny.</text>
19            <text type="probability_of_precipitation">5%</text>
20        </forecast-period>
21

In this snippet, index="0" indicates 'today' and index="1" indicates 'tomorrow'. The client wants outlook for 7 days.

So currently out of all that XML data I need to identify which day it's about, the icon code (for the pretty pictures) and the Precis (usually a single word or short phrase), probability_of_precipitation (is it gonna rain?) and the times. The rest I can throw away.

In another file with similar structure, there's a long form forecast for another version of the page.

I've been able to access the attributes in the first line (aac and description) but what I need help with is how to access the forecast-period elements under that line. There are forecast-period elements for all the other districts too, which we don't want to access.

I get to this part of the XML file with the ColdFusion XmlSearch/XPATH expression

1<area aac="NSW_PT123" description="Richmond" type="location" parent-aac="NSW_PW005">
2        <forecast-period index="0" start-time-local="2021-10-16T17:00:00+11:00" end-time-local="2021-10-17T00:00:00+11:00" start-time-utc="2021-10-16T06:00:00Z" end-time-utc="2021-10-16T13:00:00Z">
3            <element type="forecast_icon_code">2</element>
4            <text type="precis">Clear.</text>
5            <text type="probability_of_precipitation">5%</text>
6        </forecast-period>
7        <forecast-period index="1" start-time-local="2021-10-17T00:00:00+11:00" end-time-local="2021-10-18T00:00:00+11:00" start-time-utc="2021-10-16T13:00:00Z" end-time-utc="2021-10-17T13:00:00Z">
8            <element type="forecast_icon_code">1</element>
9            <element type="air_temperature_minimum" units="Celsius">7</element>
10            <element type="air_temperature_maximum" units="Celsius">24</element>
11            <text type="precis">Sunny.</text>
12            <text type="probability_of_precipitation">0%</text>
13        </forecast-period>
14        <forecast-period index="2" start-time-local="2021-10-18T00:00:00+11:00" end-time-local="2021-10-19T00:00:00+11:00" start-time-utc="2021-10-17T13:00:00Z" end-time-utc="2021-10-18T13:00:00Z">
15            <element type="forecast_icon_code">1</element>
16            <element type="air_temperature_minimum" units="Celsius">7</element>
17            <element type="air_temperature_maximum" units="Celsius">28</element>
18            <text type="precis">Sunny.</text>
19            <text type="probability_of_precipitation">5%</text>
20        </forecast-period>
21XmlSearch(IDN10064XML, "//area[@aac='NSW_PT123']")
22

So here's my question. In the example code above, (which i have no control over - it's what the government puts out) how do I create a variable that will give me the results

  • "Clear." from the above precis element?
  • "5%" from the probability of precipitation element?
  • "2" from the forecast_icon_code element?

ANSWER

Answered 2021-Oct-19 at 09:22
1<area aac="NSW_PT123" description="Richmond" type="location" parent-aac="NSW_PW005">
2        <forecast-period index="0" start-time-local="2021-10-16T17:00:00+11:00" end-time-local="2021-10-17T00:00:00+11:00" start-time-utc="2021-10-16T06:00:00Z" end-time-utc="2021-10-16T13:00:00Z">
3            <element type="forecast_icon_code">2</element>
4            <text type="precis">Clear.</text>
5            <text type="probability_of_precipitation">5%</text>
6        </forecast-period>
7        <forecast-period index="1" start-time-local="2021-10-17T00:00:00+11:00" end-time-local="2021-10-18T00:00:00+11:00" start-time-utc="2021-10-16T13:00:00Z" end-time-utc="2021-10-17T13:00:00Z">
8            <element type="forecast_icon_code">1</element>
9            <element type="air_temperature_minimum" units="Celsius">7</element>
10            <element type="air_temperature_maximum" units="Celsius">24</element>
11            <text type="precis">Sunny.</text>
12            <text type="probability_of_precipitation">0%</text>
13        </forecast-period>
14        <forecast-period index="2" start-time-local="2021-10-18T00:00:00+11:00" end-time-local="2021-10-19T00:00:00+11:00" start-time-utc="2021-10-17T13:00:00Z" end-time-utc="2021-10-18T13:00:00Z">
15            <element type="forecast_icon_code">1</element>
16            <element type="air_temperature_minimum" units="Celsius">7</element>
17            <element type="air_temperature_maximum" units="Celsius">28</element>
18            <text type="precis">Sunny.</text>
19            <text type="probability_of_precipitation">5%</text>
20        </forecast-period>
21XmlSearch(IDN10064XML, "//area[@aac='NSW_PT123']")
22<cffunction name="WeatherForecast" returntype="struct">
23  <cfargument name="weatherData" type="xml" required="yes">
24  <cfargument name="areaCode" type="string" required="yes">
25
26  <cfset var areas = XmlSearch(weatherData, "//area[@aac='#areaCode#']")>
27  <cfif ArrayLen(areas) eq 0>
28    <cfthrow message="WeatherForecast: area code #areaCode# not found.">
29  </cfif>
30  
31  <cfset var textOnly = function (node) {
32    return node.XmlType == 'ATTRIBUTE' ? node.XmlValue : node.XmlText;
33  }>
34
35  <cfreturn {
36    icons: XmlSearch(areas[1], "./forecast-period/element[@type='forecast_icon_code']").map(textOnly),
37    precis: XmlSearch(areas[1], "./forecast-period/text[@type='precis']").map(textOnly),
38    precipitation: XmlSearch(areas[1], "./forecast-period/text[@type='probability_of_precipitation']").map(textOnly)
39  }>
40</cffunction>
41

Usage:

1<area aac="NSW_PT123" description="Richmond" type="location" parent-aac="NSW_PW005">
2        <forecast-period index="0" start-time-local="2021-10-16T17:00:00+11:00" end-time-local="2021-10-17T00:00:00+11:00" start-time-utc="2021-10-16T06:00:00Z" end-time-utc="2021-10-16T13:00:00Z">
3            <element type="forecast_icon_code">2</element>
4            <text type="precis">Clear.</text>
5            <text type="probability_of_precipitation">5%</text>
6        </forecast-period>
7        <forecast-period index="1" start-time-local="2021-10-17T00:00:00+11:00" end-time-local="2021-10-18T00:00:00+11:00" start-time-utc="2021-10-16T13:00:00Z" end-time-utc="2021-10-17T13:00:00Z">
8            <element type="forecast_icon_code">1</element>
9            <element type="air_temperature_minimum" units="Celsius">7</element>
10            <element type="air_temperature_maximum" units="Celsius">24</element>
11            <text type="precis">Sunny.</text>
12            <text type="probability_of_precipitation">0%</text>
13        </forecast-period>
14        <forecast-period index="2" start-time-local="2021-10-18T00:00:00+11:00" end-time-local="2021-10-19T00:00:00+11:00" start-time-utc="2021-10-17T13:00:00Z" end-time-utc="2021-10-18T13:00:00Z">
15            <element type="forecast_icon_code">1</element>
16            <element type="air_temperature_minimum" units="Celsius">7</element>
17            <element type="air_temperature_maximum" units="Celsius">28</element>
18            <text type="precis">Sunny.</text>
19            <text type="probability_of_precipitation">5%</text>
20        </forecast-period>
21XmlSearch(IDN10064XML, "//area[@aac='NSW_PT123']")
22<cffunction name="WeatherForecast" returntype="struct">
23  <cfargument name="weatherData" type="xml" required="yes">
24  <cfargument name="areaCode" type="string" required="yes">
25
26  <cfset var areas = XmlSearch(weatherData, "//area[@aac='#areaCode#']")>
27  <cfif ArrayLen(areas) eq 0>
28    <cfthrow message="WeatherForecast: area code #areaCode# not found.">
29  </cfif>
30  
31  <cfset var textOnly = function (node) {
32    return node.XmlType == 'ATTRIBUTE' ? node.XmlValue : node.XmlText;
33  }>
34
35  <cfreturn {
36    icons: XmlSearch(areas[1], "./forecast-period/element[@type='forecast_icon_code']").map(textOnly),
37    precis: XmlSearch(areas[1], "./forecast-period/text[@type='precis']").map(textOnly),
38    precipitation: XmlSearch(areas[1], "./forecast-period/text[@type='probability_of_precipitation']").map(textOnly)
39  }>
40</cffunction>
41<cfset IDN10064XML = XmlParse(weatherXml, true)>
42<cfset forecast = WeatherForecast(IDN10064XML, "NSW_PT123")>
43

returns this struct:

1<area aac="NSW_PT123" description="Richmond" type="location" parent-aac="NSW_PW005">
2        <forecast-period index="0" start-time-local="2021-10-16T17:00:00+11:00" end-time-local="2021-10-17T00:00:00+11:00" start-time-utc="2021-10-16T06:00:00Z" end-time-utc="2021-10-16T13:00:00Z">
3            <element type="forecast_icon_code">2</element>
4            <text type="precis">Clear.</text>
5            <text type="probability_of_precipitation">5%</text>
6        </forecast-period>
7        <forecast-period index="1" start-time-local="2021-10-17T00:00:00+11:00" end-time-local="2021-10-18T00:00:00+11:00" start-time-utc="2021-10-16T13:00:00Z" end-time-utc="2021-10-17T13:00:00Z">
8            <element type="forecast_icon_code">1</element>
9            <element type="air_temperature_minimum" units="Celsius">7</element>
10            <element type="air_temperature_maximum" units="Celsius">24</element>
11            <text type="precis">Sunny.</text>
12            <text type="probability_of_precipitation">0%</text>
13        </forecast-period>
14        <forecast-period index="2" start-time-local="2021-10-18T00:00:00+11:00" end-time-local="2021-10-19T00:00:00+11:00" start-time-utc="2021-10-17T13:00:00Z" end-time-utc="2021-10-18T13:00:00Z">
15            <element type="forecast_icon_code">1</element>
16            <element type="air_temperature_minimum" units="Celsius">7</element>
17            <element type="air_temperature_maximum" units="Celsius">28</element>
18            <text type="precis">Sunny.</text>
19            <text type="probability_of_precipitation">5%</text>
20        </forecast-period>
21XmlSearch(IDN10064XML, "//area[@aac='NSW_PT123']")
22<cffunction name="WeatherForecast" returntype="struct">
23  <cfargument name="weatherData" type="xml" required="yes">
24  <cfargument name="areaCode" type="string" required="yes">
25
26  <cfset var areas = XmlSearch(weatherData, "//area[@aac='#areaCode#']")>
27  <cfif ArrayLen(areas) eq 0>
28    <cfthrow message="WeatherForecast: area code #areaCode# not found.">
29  </cfif>
30  
31  <cfset var textOnly = function (node) {
32    return node.XmlType == 'ATTRIBUTE' ? node.XmlValue : node.XmlText;
33  }>
34
35  <cfreturn {
36    icons: XmlSearch(areas[1], "./forecast-period/element[@type='forecast_icon_code']").map(textOnly),
37    precis: XmlSearch(areas[1], "./forecast-period/text[@type='precis']").map(textOnly),
38    precipitation: XmlSearch(areas[1], "./forecast-period/text[@type='probability_of_precipitation']").map(textOnly)
39  }>
40</cffunction>
41<cfset IDN10064XML = XmlParse(weatherXml, true)>
42<cfset forecast = WeatherForecast(IDN10064XML, "NSW_PT123")>
43{
44    "PRECIPITATION": ["5%", "0%", "5%"],
45    "PRECIS": ["Clear.", "Sunny.", "Sunny."],
46    "ICONS": ["2", "1", "1"]
47}
48

Each part will contain as many values as there are <forecast-period> elements for that <area> in the XML, in the order they appear in the XML. In other words, forecast.precipitation[1] will refer to "today", unless there is a chance that the XML ever arrives out of order (I doubt it).

Things like the time attribute values can be extracted in the same way:

1&lt;area aac=&quot;NSW_PT123&quot; description=&quot;Richmond&quot; type=&quot;location&quot; parent-aac=&quot;NSW_PW005&quot;&gt;
2        &lt;forecast-period index=&quot;0&quot; start-time-local=&quot;2021-10-16T17:00:00+11:00&quot; end-time-local=&quot;2021-10-17T00:00:00+11:00&quot; start-time-utc=&quot;2021-10-16T06:00:00Z&quot; end-time-utc=&quot;2021-10-16T13:00:00Z&quot;&gt;
3            &lt;element type=&quot;forecast_icon_code&quot;&gt;2&lt;/element&gt;
4            &lt;text type=&quot;precis&quot;&gt;Clear.&lt;/text&gt;
5            &lt;text type=&quot;probability_of_precipitation&quot;&gt;5%&lt;/text&gt;
6        &lt;/forecast-period&gt;
7        &lt;forecast-period index=&quot;1&quot; start-time-local=&quot;2021-10-17T00:00:00+11:00&quot; end-time-local=&quot;2021-10-18T00:00:00+11:00&quot; start-time-utc=&quot;2021-10-16T13:00:00Z&quot; end-time-utc=&quot;2021-10-17T13:00:00Z&quot;&gt;
8            &lt;element type=&quot;forecast_icon_code&quot;&gt;1&lt;/element&gt;
9            &lt;element type=&quot;air_temperature_minimum&quot; units=&quot;Celsius&quot;&gt;7&lt;/element&gt;
10            &lt;element type=&quot;air_temperature_maximum&quot; units=&quot;Celsius&quot;&gt;24&lt;/element&gt;
11            &lt;text type=&quot;precis&quot;&gt;Sunny.&lt;/text&gt;
12            &lt;text type=&quot;probability_of_precipitation&quot;&gt;0%&lt;/text&gt;
13        &lt;/forecast-period&gt;
14        &lt;forecast-period index=&quot;2&quot; start-time-local=&quot;2021-10-18T00:00:00+11:00&quot; end-time-local=&quot;2021-10-19T00:00:00+11:00&quot; start-time-utc=&quot;2021-10-17T13:00:00Z&quot; end-time-utc=&quot;2021-10-18T13:00:00Z&quot;&gt;
15            &lt;element type=&quot;forecast_icon_code&quot;&gt;1&lt;/element&gt;
16            &lt;element type=&quot;air_temperature_minimum&quot; units=&quot;Celsius&quot;&gt;7&lt;/element&gt;
17            &lt;element type=&quot;air_temperature_maximum&quot; units=&quot;Celsius&quot;&gt;28&lt;/element&gt;
18            &lt;text type=&quot;precis&quot;&gt;Sunny.&lt;/text&gt;
19            &lt;text type=&quot;probability_of_precipitation&quot;&gt;5%&lt;/text&gt;
20        &lt;/forecast-period&gt;
21XmlSearch(IDN10064XML, &quot;//area[@aac='NSW_PT123']&quot;)
22&lt;cffunction name=&quot;WeatherForecast&quot; returntype=&quot;struct&quot;&gt;
23  &lt;cfargument name=&quot;weatherData&quot; type=&quot;xml&quot; required=&quot;yes&quot;&gt;
24  &lt;cfargument name=&quot;areaCode&quot; type=&quot;string&quot; required=&quot;yes&quot;&gt;
25
26  &lt;cfset var areas = XmlSearch(weatherData, &quot;//area[@aac='#areaCode#']&quot;)&gt;
27  &lt;cfif ArrayLen(areas) eq 0&gt;
28    &lt;cfthrow message=&quot;WeatherForecast: area code #areaCode# not found.&quot;&gt;
29  &lt;/cfif&gt;
30  
31  &lt;cfset var textOnly = function (node) {
32    return node.XmlType == 'ATTRIBUTE' ? node.XmlValue : node.XmlText;
33  }&gt;
34
35  &lt;cfreturn {
36    icons: XmlSearch(areas[1], &quot;./forecast-period/element[@type='forecast_icon_code']&quot;).map(textOnly),
37    precis: XmlSearch(areas[1], &quot;./forecast-period/text[@type='precis']&quot;).map(textOnly),
38    precipitation: XmlSearch(areas[1], &quot;./forecast-period/text[@type='probability_of_precipitation']&quot;).map(textOnly)
39  }&gt;
40&lt;/cffunction&gt;
41&lt;cfset IDN10064XML = XmlParse(weatherXml, true)&gt;
42&lt;cfset forecast = WeatherForecast(IDN10064XML, &quot;NSW_PT123&quot;)&gt;
43{
44    &quot;PRECIPITATION&quot;: [&quot;5%&quot;, &quot;0%&quot;, &quot;5%&quot;],
45    &quot;PRECIS&quot;: [&quot;Clear.&quot;, &quot;Sunny.&quot;, &quot;Sunny.&quot;],
46    &quot;ICONS&quot;: [&quot;2&quot;, &quot;1&quot;, &quot;1&quot;]
47}
48XmlSearch(areas[1], &quot;./forecast-period/@start-time-local&quot;).map(textOnly)
49

Source https://stackoverflow.com/questions/69627435

QUESTION

How do you make your check constraint case insensitive in SQL?

Asked 2021-Oct-16 at 19:27

This is my piece of code.

1CREATE TABLE ORDER_SOURCE(
2    OS_ID NUMBER(4),
3    OS_DESC VARCHAR2(20),
4    CONSTRAINT order_source_os_id_pk PRIMARY KEY (OS_ID),
5    CONSTRAINT order_source_os_desc_cc CHECK ((OS_DESC='CATALOG DESCRIPTION') OR (OS_DESC='WEB SITE'))
6);
7

I want to be able to insert values in lower case too. Example down Below:

1CREATE TABLE ORDER_SOURCE(
2    OS_ID NUMBER(4),
3    OS_DESC VARCHAR2(20),
4    CONSTRAINT order_source_os_id_pk PRIMARY KEY (OS_ID),
5    CONSTRAINT order_source_os_desc_cc CHECK ((OS_DESC='CATALOG DESCRIPTION') OR (OS_DESC='WEB SITE'))
6);
7INSERT INTO ORDER_SOURCE VALUES(0002,'Web Site');
8

But I can edit my check constraints to add 'Web Site' or 'Catalog', I just want to try something else. Thanks.

ANSWER

Answered 2021-Oct-16 at 15:21

You may lowercase the column and then compare to lowercase string literals:

1CREATE TABLE ORDER_SOURCE(
2    OS_ID NUMBER(4),
3    OS_DESC VARCHAR2(20),
4    CONSTRAINT order_source_os_id_pk PRIMARY KEY (OS_ID),
5    CONSTRAINT order_source_os_desc_cc CHECK ((OS_DESC='CATALOG DESCRIPTION') OR (OS_DESC='WEB SITE'))
6);
7INSERT INTO ORDER_SOURCE VALUES(0002,'Web Site');
8CONSTRAINT order_source_os_desc_cc
9CHECK (LOWER(OS_DESC) IN ('catalog description', 'web site'))
10

Source https://stackoverflow.com/questions/69596903

QUESTION

Can I leave away an association class for many to many relations?

Asked 2021-Aug-05 at 22:55

Just a simple question: I'm working on a class diagram for a dynamic web site for my internship. I have an association between two classes (client and article), the relation is many to many.

Normally I have to add an association class between them, but I don't want to because the client can only read the article's writing on the web page, and he cannot post. Is it correct if I don't draw the association class on the diagram?

ANSWER

Answered 2021-Aug-05 at 17:12

There is no need to add association class only due to many to many relationship. The association class is needed when you have an association that at the same time is also a class, i.e. has some properties on its own.

You can use simple association with any multiplicity on any of the ends including having * on both ends.

Source https://stackoverflow.com/questions/68669184

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