pattern | An experiment with my new prototypal style programming

 by   creationix JavaScript Version: 0.2.0 License: No License

kandi X-RAY | pattern Summary

kandi X-RAY | pattern Summary

pattern is a JavaScript library typically used in Institutions, Learning, Administration, Public Services applications. pattern has no bugs, it has no vulnerabilities and it has low support. You can install using 'npm i pattern' or download it from GitHub, npm.

This is a new take on "classes" and object inheritance for ECMA5. JavaScript has traditionally used special functions called constructors that had a special prototype property on them and used that to simulate classical inheritance. This works well for many people, but I long for something simpler and with less indirection. "The classical object model is by far the most popular today, but I think that the prototypal object model is more capable and offers more expressive power." - Douglas Crockford Inspired by quotes like these and seeing the new power we have in ECMA5 I set out to implement a simple, but robust prototypal object system for my personal use. Forget all you know about the distinction between classes and instances and enter the realm of prototypes.
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              pattern has a low active ecosystem.
              It has 31 star(s) with 5 fork(s). There are 5 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 2 open issues and 1 have been closed. On average issues are closed in 7 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of pattern is 0.2.0

            kandi-Quality Quality

              pattern has 0 bugs and 0 code smells.

            kandi-Security Security

              pattern has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              pattern code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              pattern does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              pattern releases are not available. You will need to build from source code and install.
              Deployable package is available in npm.
              Installation instructions are not available. Examples and code snippets are available.

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            pattern Key Features

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            pattern Examples and Code Snippets

            No Code Snippets are available at this moment for pattern.

            Community Discussions

            QUESTION

            Invalid Character when Selecting classname - Python Webscraping
            Asked 2021-Jun-16 at 01:11

            I am beginning to learn the basics of webscraping with Python, but I am having a little trouble with my code. I am trying to scrape the weather from the front page of 'yahoo.com':

            ...

            ANSWER

            Answered 2021-Jun-16 at 01:11

            The problem is that your CSS selectors include parentheses () and dollar signs $. These symbols already have a special meaning. See:

            You can escape these characters using a backslash \.

            Source https://stackoverflow.com/questions/67994434

            QUESTION

            How strict is the mvc pattern with model and view interactions?
            Asked 2021-Jun-16 at 01:01
            I am confused about how model and view can interact

            I was making a simple to do app with mvc pattern and I saw an article which said you shouldn't pass the model values directly to the view, which made the project more complex than I thought (I am relatively new to programming and this is the first time I am trying out a design pattern).

            But then later on I talked to someone who said that that is not true and you can send the model data directly to view, he didn't even use classes or some kind of grouping to separate the function he just put them in separate files.

            I was wondering if there is a guideline that I couldn't find or we can do whatever we want as long as they are kind of separated. I would love an article or a guide to read up on as well.

            ...

            ANSWER

            Answered 2021-Jun-16 at 01:01

            Since, I am not 100% sure the context in which you are trying to apply the MVC pattern, a good generic explanation of MVC can be found in GoF's 1995 book, Design Patterns: Elements of Reusable Object Oriented Software.

            In the book, they state the following.

            The Model is the application object, the View is its screen presentation, and the Controller defines the way the user interface reacts to user input.

            A more robust explanation can be found from Martin Fowler where he also makes the case for a variation of Model View Controller that uses a Presentation Model.

            If you are referring to Spring MVC then there is some magic that blurs the lines a bit. But in general, you have a controller that represents some screen or an encapsulated piece of functionality that the user (web requests) interact with. The controller serves up responses that are derived from the domain, usually via a Spring Service (i.e. @Service). The domain (Model) doesn't know anything about the View and the View may or may not know anything about the domain.

            Given that, the View should be derived from the Model. But that's not always the case since sometimes how we present things to a screen is not the best logical way to model things in our domain - not to mention, the domain should be presentation agnostic. This leads into Fowler's argument for a Presentation Model, which is a model that belongs to the Presentation.

            I call this a Presentation Model because it's a model that is really designed for and thus part of the presentation layer.

            Microsoft took that idea and ran with it in a variant of MVC called MVVM (Model View ViewModel).

            You can read more about that in Microsoft's documentation on ASP.Net Core.

            So, back to your original question of "Should you pass the model directly to the view?" If you are using MVC then the controller is what provides the interaction. But if you're really asking, "Can you bind your view directly to the model?" If your model has all the stuff you need organized how your view needs it, then sure. And if it's simple enough, maybe that's the way to go. Otherwise, you could go with something like a Presentation Model or MVVM.

            Source https://stackoverflow.com/questions/67993373

            QUESTION

            My chainlink request isn't getting fulfilled?
            Asked 2021-Jun-16 at 00:09

            Can someone help me investigate why my Chainlink requests aren't getting fulfilled. They get fulfilled in my tests (see hardhat test etherscan events(https://kovan.etherscan.io/address/0x8Ae71A5a6c73dc87e0B9Da426c1b3B145a6F0d12#events). But they don't get fulfilled when I make them from my react app (see react app contract's etherscan events https://kovan.etherscan.io/address/0x6da2256a13fd36a884eb14185e756e89ffa695f8#events).

            Same contracts (different addresses), same function call.

            Updates:

            Here's the code I use to call them in my tests

            ...

            ANSWER

            Answered 2021-Jun-16 at 00:09

            Remove your agreement vars in MinimalClone.sol, and either have the user input them as args in your init() method or hardcode them into the request like this:

            Source https://stackoverflow.com/questions/67829219

            QUESTION

            what is the best regular expression to replace non numeric character in a string preceded by certain phrase in python?
            Asked 2021-Jun-15 at 20:02

            I have to parse lists of names, addresses, etc. that were OCRed and have invalid/incorrect characters in them and on the state postal code I need to recognize the pattern with a 2 character state followed by a 5 digit postal code and replace any non numeric characters in the postal code. I might have OK 7-41.03 at the end of a string I need to remove the hyphen and period. I know that re.sub('[^0-9]+', '', '7-41.03') will remove the desired characters but I need it only replace characters in numbers when found at the end of the string and only if preceded by a two character state wrapped in spaces like OK. It seems if I add anything to the regular expression as far as a lookbehind expression then I can't seem to get the characters replaced. I've come up with the following but I think there must be a simpler expression to accomplish this. Example:

            ...

            ANSWER

            Answered 2021-Jun-15 at 20:02

            You need to make use of re.sub callbacks:

            Source https://stackoverflow.com/questions/67990895

            QUESTION

            Create a DateTimeFormater with an Optional Section at Beginning
            Asked 2021-Jun-15 at 19:54

            I have timecodes with this structure hh:mm:ss.SSS for which i have a own Class, implementing the Temporal Interface. It has the custom Field TimecodeHour Field allowing values greater than 23 for hour. I want to parse with DateTimeFormatter. The hour value is optional (can be omitted, and hours can be greater than 24); as RegEx (\d*\d\d:)?\d\d:\d\d.\d\d\d

            For the purpose of this Question my custom Field can be replaced with the normal HOUR_OF_DAY Field.

            My current Formatter

            ...

            ANSWER

            Answered 2021-Jun-11 at 11:06

            I think fundamentally the problem is that it gets stuck going down the wrong path. It sees a field of length 2, which we know is the minutes but it believes is the hours. Once it believes the optional section is present, when we know it's not, the whole thing is destined to fail.

            This is provable by changing the minimum hour length to 3.

            Source https://stackoverflow.com/questions/67935444

            QUESTION

            Managing nested Firebase realtime DB queries with await/async
            Asked 2021-Jun-15 at 19:34

            I'm writing a Firebase function (Gist) which

            1. Queries a realtime database ref (events) in the following fashion:

              await admin.database().ref('/events_geo').once('value').then(snapshots => {

            2. Iterates through all the events

              snapshots.forEach(snapshot => {

            3. Events are filtered by a criteria for further processing

            4. Several queries are fired off towards realtime DB to get details related to the event

              await database().ref("/ratings").orderByChild('fk_event').equalTo(snapshot.key).once('value').then(snapshots => {

            5. Data is prepared for SendGrid and the processing is finished

            All of the data processing works perfectly fine but I can't get the outer await (point 1 in my list) to wait for the inner awaits (queries towards realtime DB) and thus when SendGrid should be called the data is empty. The data arrives a little while later. Example output from Firebase function logs can be seen below:

            10:54:12.642 AM Function execution started

            10:54:13.945 AM There are no emails to be sent in afterEventHostMailGoodRating

            10:54:14.048 AM There are no emails to be sent in afterEventHostMailBadRating

            10:54:14.052 AM Function execution took 1412 ms, finished with status: 'ok'

            10:54:14.148 AM

            Super hyggelig aften :)

            super oplevelse, ... long string generated

            Gist showing the function in question

            I'm probably mixing up my async/awaits because of the awaits inside the await. But I don't see how else the code could be written without splitting it out into many atomic pieces but that would still require stitching a bunch of awaits together and make it harder to read.

            So, two questions in total. Can this code work and what would be the ideal way to handle this pattern of making further processing on top of data fetched from Realtime DB?

            Best regards, Simon

            ...

            ANSWER

            Answered 2021-Jun-15 at 11:20

            Your problem is that you use async in a foreEach loop here:

            Source https://stackoverflow.com/questions/67984092

            QUESTION

            Regex Pattern In Between Two Exact Strings
            Asked 2021-Jun-15 at 19:27

            Hi I have this working code to detect a valid UUID pattern.

            ...

            ANSWER

            Answered 2021-Jun-15 at 19:27

            There is a // in the pattern that is not in the example string. Besides that, you can omit the word boundaries in between a character a-f0-9 and a - because it is implicit.

            Note to escape the dot to match it literally, and you can add the word boundaries at the start and at the end to prevent partial matches.

            You could update the pattern to

            Source https://stackoverflow.com/questions/67992220

            QUESTION

            Installing Quickstart UI for IdentityServer4
            Asked 2021-Jun-15 at 17:53

            I created an empty asp.net core web application (dotnet new web -n ) and went to the github for IdentityServer4.Quickstart.UI and was followed the instructions to add the quickstart UI. I first did the powershell cmd iex ((New-Object System.Net.WebClient).DownloadString('https://raw.githubusercontent.com/IdentityServer/IdentityServer4.Quickstart.UI/main/getmain.ps1')) to download the files and run the application but it keeps telling me Index not found but the file is inside of the Views folder. So I then deleted all those files it downloaded from the project and installed it using its templates by running the cmds dotnet new -i identityserver4.templates then dotnet new is4ui --force which downloaded those files again onto my project. However, it keeps telling me the same message.

            I noticed that under the Quickstart folder, contains a folder named Home which has the HomeController.cs and the namespace is as IdentityServerHost.Quickstart.UI... do I need to change that namespace to match my solution i.e. ids.Quickstart.Home?

            What is causing this to display that error when infact there is the Index.cshtml file inside of the Views folder?**

            This is my startup.cs file:

            ...

            ANSWER

            Answered 2021-Jun-15 at 14:49

            Try changing your app.UseEndpoints( endpoints => ...) line, in your Configure() method to the following:

            Source https://stackoverflow.com/questions/67988185

            QUESTION

            Copy files incrementally from S3 to EBS storage using filters
            Asked 2021-Jun-15 at 15:28

            I wish to move a large set of files from an AWS S3 bucket in one AWS account (source), having systematic filenames following this pattern:

            ...

            ANSWER

            Answered 2021-Jun-15 at 15:28

            You can use sort -V command to consider the proper versioning of files and then invoke copy command on each file one by one or a list of files at a time.

            ls | sort -V

            If you're on a GNU system, you can also use ls -v. This won't work in MacOS.

            Source https://stackoverflow.com/questions/67985694

            QUESTION

            Security concern of using Firebase ID tokens for authentication on my custom backend
            Asked 2021-Jun-15 at 15:02

            I want to use firebase auth for my android and ios applications with custom backend. So I need some way of authentication for api calls from mobile apps to the backend.

            I was able to find following guide in firebase documentation which suggests to sent firebase id token to my backend and validate it there with firebase Admin SDK. https://firebase.google.com/docs/auth/admin/verify-id-tokens

            But this approach does not seem to be a security best practice. For example here https://auth0.com/blog/why-should-use-accesstokens-to-secure-an-api/ it is said that for API access one should use access tokens rather than id tokens.

            Are there any good pattern for using firebase auth with my backend?

            ...

            ANSWER

            Answered 2021-Jun-15 at 15:02

            firebaser here

            Firebase itself passes the ID token with each request, and then uses that on the server to identify the user and to determine whether they're authorized to perform the operation. This is a common (I'd even say idiomatic) approach to authentication and authorization, and if there's a security risk that you've identified in it, we'd love to hear about it on https://www.google.com/about/appsecurity/

            From reading the blog post it seems the author is making a distinction between authentication (the user proving their identify) and authorization (them getting access to certain resources based on that identity), but it'd probably be best to ask the author for more information on why that would preclude passing an ID token to identify the user.

            Source https://stackoverflow.com/questions/67982633

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            Install pattern

            You can install using 'npm i pattern' or download it from GitHub, npm.

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