qtum | decentralized blockchain project built on Bitcoin 's UTXO | Blockchain library

by qtumproject C++ Version: v23.1 License: MIT

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | qtum Summary

qtum is a C++ library typically used in Blockchain, Ethereum, Bitcoin applications. qtum has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Qtum is a decentralized blockchain project built on Bitcoin's UTXO model, with support for Ethereum Virtual Machine based smart contracts, and secured by a proof of stake consensus model. It achieves this through the revolutionary Account Abstraction Layer which allows the EVM to communicate with Qtum's Bitcoin-like UTXO blockchain. For more general information about Qtum as well as links to join our community, go to Welcome to the Qtum Ignition Main Network. This is the main network where the tokens hold value and should be guarded very carefully. If you are testing the network, or developing unstable software on Qtum, we highly recommend using either testnet or regtest mode.

Support

Quality

Security

License

Reuse

Support

qtum has a medium active ecosystem.

It has 1173 star(s) with 398 fork(s). There are 192 watchers for this library.

It had no major release in the last 12 months.

There are 35 open issues and 294 have been closed. On average issues are closed in 52 days. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of qtum is v23.1

Quality

qtum has 0 bugs and 0 code smells.

Security

qtum has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

qtum code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

qtum is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

qtum releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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qtum Key Features

No Key Features are available at this moment for qtum.

qtum Examples and Code Snippets

No Code Snippets are available at this moment for qtum.

Community Discussions

Trending Discussions on qtum

How to get a specific value from a dictionary

Filtering data out of an api in python?

Problem with retrieving a list of all market pairs in json using Binance Api with php

How can I combine two react objects?

Build a dict and populate it in a for loop

Filter string and null values from object

QUESTION

How to get a specific value from a dictionary

Asked 2021-Aug-13 at 13:23

I'm trying to fill a dictionary using scraped data from a web site, I get the data, then I assigned it to the dictionary, when I print the dictionary the data shows up. I haven't been able to access only one row of the dictionary, what am I missing?

Here is the code:

...

ANSWER

Answered 2021-Aug-12 at 17:55

Its normal to use the key to access the value in a dictionary. i.e

Source https://stackoverflow.com/questions/68762064

QUESTION

Filtering data out of an api in python?

Asked 2021-Aug-03 at 14:34

I try to filter out some specific data out of the list I get from an api request of a crypto price ticker.

This prints all the data:

...

ANSWER

Answered 2021-Aug-03 at 13:46

The data variable is a list with dictionaries and the dictionaries have the values you want.So, you just need to dig in a bit deeper for the data you want.

Steps:

Firstly, access each dictionary in the list using a for loop
Check if the "market" value for the current dictionary is among ["BTC-EUR","ETH_EUR"] or not
If it is, print the price for those values

Try:

Source https://stackoverflow.com/questions/68636851

QUESTION

Problem with retrieving a list of all market pairs in json using Binance Api with php

Asked 2021-Jul-07 at 11:37

I am trying to retrieve a list of all market pairs in json using foreach. I want result to be something like this

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ANSWER

Answered 2021-Jul-07 at 11:37

Dont echo the JSON Strings X time in a loop. Build an array in the loop and echo the JSON String ONCE from the built array.

Looks like you are also getting the data from the wrong place in the data structure!

Source https://stackoverflow.com/questions/68285136

QUESTION

How can I combine two react objects?

Asked 2021-May-06 at 16:06

const a = [

0: {market: "KRW-BTC", korean_name: "비트코인", english_name: "Bitcoin"}
1: {market: "KRW-ETH", korean_name: "이더리움", english_name: "Ethereum"}
2: {market: "KRW-NEO", korean_name: "네오", english_name: "NEO"}
3: {market: "KRW-MTL", korean_name: "메탈", english_name: "Metal"}
4: {market: "KRW-LTC", korean_name: "라이트코인", english_name: "Litecoin"}
5: {market: "KRW-XRP", korean_name: "리플", english_name: "Ripple"}
6: {market: "KRW-ETC", korean_name: "이더리움클래식", english_name: "Ethereum Classic"}
7: {market: "KRW-OMG", korean_name: "오미세고", english_name: "OmiseGo"}
8: {market: "KRW-SNT", korean_name: "스테이터스네트워크토큰", english_name: "Status Network Token"}
9: {market: "KRW-WAVES", korean_name: "웨이브", english_name: "Waves"}
10: {market: "KRW-XEM", korean_name: "넴", english_name: "NEM"}
11: {market: "KRW-QTUM", korean_name: "퀀텀", english_name: "Qtum"}
12: {market: "KRW-LSK", korean_name: "리스크", english_name: "Lisk"}
]



const b = [

0: {market: "KRW-BTC", trade_date: "20210506", trade_time: "144435", trade_date_kst: "20210506", trade_time_kst: "234435", …}
1: {market: "KRW-ETH", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
2: {market: "KRW-NEO", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
3: {market: "KRW-MTL", trade_date: "20210506", trade_time: "144432", trade_date_kst: "20210506", trade_time_kst: "234432", …}
4: {market: "KRW-LTC", trade_date: "20210506", trade_time: "144433", trade_date_kst: "20210506", trade_time_kst: "234433", …}
5: {market: "KRW-XRP", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
6: {market: "KRW-ETC", trade_date: "20210506", trade_time: "144437", trade_date_kst: "20210506", trade_time_kst: "234437", …}
7: {market: "KRW-OMG", trade_date: "20210506", trade_time: "144437", trade_date_kst: "20210506", trade_time_kst: "234437", …}
8: {market: "KRW-SNT", trade_date: "20210506", trade_time: "144434", trade_date_kst: "20210506", trade_time_kst: "234434", …}
9: {market: "KRW-WAVES", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
10: {market: "KRW-XEM", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
11: {market: "KRW-QTUM", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
12: {market: "KRW-LSK", trade_date: "20210506", trade_time: "144436", trade_date_kst: "20210506", trade_time_kst: "234436", …}
]

...

ANSWER

Answered 2021-May-06 at 15:17

something like that:

Source https://stackoverflow.com/questions/67420933

QUESTION

Build a dict and populate it in a for loop

Asked 2021-Apr-25 at 08:23

I'm trying to build a dictionary that should contain data about a coin, date and its close price on the given date.

The data I'm looping through, which I am using as the base out of which I want to build my dict, look like this (it's a Python list):

...

ANSWER

Answered 2021-Apr-25 at 08:09

The structure you are building has several levels of nesting. Let's think about them inside out.

Each coin's data is a mapping from date to value. It makes sense for this to be a single dict rather than a list of singleton dictionaries. To add a new mapping, just set coindict[date] = value

The structure above this is a dictionary of coin names, which are strings, with a coindict as described above as the value of each.

Python's defaultdict provides a good way to avoid having to go through

Source https://stackoverflow.com/questions/67250829

QUESTION

Filter string and null values from object

Asked 2020-Jan-08 at 18:56

when a value of a property of the object is null or contains "missing" the whole object should be filterd.

this works for filtering null

...

ANSWER

Answered 2020-Jan-08 at 17:32

Use Array.prototype.every().

Use && to combine multiple tests.

Source https://stackoverflow.com/questions/59650935

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install qtum

This is a quick start script for compiling Qtum on Ubuntu.
Here is a brief description for compiling Qtum on CentOS, for more details please refer to the specific document.
The commands in this guide should be executed in a Terminal application. The built-in one is located in /Applications/Utilities/Terminal.app.
Clone the qtum source code and cd into qtum git clone --recursive https://github.com/qtumproject/qtum.git cd qtum
Build qtum-core: Configure and build the headless qtum binaries as well as the GUI (if Qt is found). You can disable the GUI build by passing --without-gui to configure. ./autogen.sh ./configure make
It is recommended to build and run the unit tests: make check