10 Things a Serious JavaScript Developer Should Learn 🤓

https://benmccormick.org/2017/07/19/ten-things-javanoscript/

#JavaScript
@ProgrammingTip

What is Unit Test ❓

A unit test is a piece of a code (usually a method) that invokes another piece of code and checks the correctness of some assumptions afterward. ✅

If the assumptions turn out to be wrong, the unit test has failed. ❌

A unit is a method or function.

#UnitTest
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Properties of a good unit test ✅

A unit test should have the following properties :

1️⃣ It should be automated and repeatable.

2️⃣ It should be easy to implement.

3️⃣ It should be relevant tomorrow.

4️⃣ Anyone should be able to run it at the push of a button.

5️⃣ It should run quickly.

6️⃣ It should be consistent in its results.

7️⃣ It should have full control of the unit under test.

8️⃣ It should be fully isolated (runs independently of other tests).

9️⃣ When it fails, it should be easy to detect what was expected and determine how to pinpoint the problem.

#UnitTest #Tips
@ProgrammingTip

The Art Of Unit Testing in C# 📘
Author : Roy Osherove 🖊

#Book #UnitTest

Eloquent JavaScript 📕
Author : Marijn Haverbeke 🖊

#Book #Javanoscript

Why use isolation frameworks❓

An isolation framework is a set of programmable APIs that makes creating fake objects much simpler, faster, and shorter than hand-coding them. 💨

#UnitTest #Mock
@ProgrammingTip

The Safe Green Zone ✅

Locate your integration and unit tests in separate places.

By doing that, you give the developers on your team a safe green test area that contains only unit tests, where they know that they can get the latest code version.

They can run all tests in that namespace or folder, and the tests should all be green.

If some tests in the safe green zone don’t pass ❌ ,
there’s a real problem, not a (false positive) configuration problem in the test.

#UnitTest
@ProgrammingTip

Tests are part of source control ✅

The test code you write needs to reside in a source control repository, just like your real production code.📦

In fact, you should treat your test code as thoughtfully as you treat your production code. ↔️

It should be part of the branch for each version of the product, and it should be part of the code that developers receive automatically when they get the latest version. 🔚

Because unit tests are so connected to the code and API, they should always stay attached to the version of the code they’re testing.

#UnitTest
@ProgrammingTip

Renaming or Refactoring Tests ♻️

An unreadable test is more of a problem than a solution. 👎🏿

It can hinder your code’s readability and your understanding of any problems it finds. ❌

If you encounter a test that has a vague or misleading name or that can be made more maintainable, change the test code. ✅

#UnitTest
@ProgrammingTip

Unit Tests ⚜️

Tests are stories you tell the next generation of programmers on a project. ✔️

They allow a developer to see exactly what an application is made of and where it started.

#UnitTest
@ProgrammingTip 💻

Creating ASP.NET Core Project ➕ Angular 4, Vue, React ⚜️

1️⃣ First you need to download & install Node.js from here :
https://nodejs.org/en/

2️⃣ Then you need to install Yeoman Generator, run this command in cmd :

npm install -g yo

3️⃣ Then you need to install ASP.NET Core SPA Generator for Yeoman, run this command :

npm install -g yo generator-aspnetcore-spa 

4️⃣ Finally create a new folder ( Project Folder ) and navigate that with cmd and run this command :

yo aspnetcore-spa

After running this command, you can choose which client technology you want to use with ASP.NET Core like Angular, Vue, React, Aurelia & ...

#aspnet #core #angular
@ProgrammingTip

The compiler doesn't care whether the code is ugly or clean. 🤷🏻‍♂️

But when we change the system, there is a human involved, and humans do care. 🙋🏻‍♂️

#CleanCode
@ProgrammingTip

Use Strings carefully ⚠️

If two Strings are concatenated using “+” operator in a “for” loop, then it creates a new String Object, every time.

This causes wastage of Memory and increases Performance time.

Also, while instantiating a String Object, constructors should be avoided and instantiation should happen directly. For example:

//Slower Instantiation ❌
String bad = new String("string object");

//Faster Instantiation ✅
String good = "string object";

#memory #java #string
@ProgrammingTip

Avoiding Memory Leaks By Simple Tricks ✅

Memory Leaks often cause performance degradation of software. Since, Java manages memory automatically, the developers do not have much control.

But there are still some standard practices which can be used to protect from memory leakages. 🙆🏻‍♂️

1️⃣ - Always release database connections when querying is complete.

2️⃣ - Try to use Finally block as often possible.

3️⃣ - Release instances stored in Static Tables.

#java #memory #performance
@programmingTip

Bootstrap Studio 🅱️

A powerful desktop app for creating responsive websites using the Bootstrap framework.

https://bootstrapstudio.io/

#Bootstrap
@ProgrammingTip

Bootstrap Studio Version 2.2.4 Professional Edition 📦

Creating a Responsive website using Boostrap Studio Tutorial ⚜️

What the f*ck JavaScript? 🤷🏻‍♂️

A list of funny and tricky JavaScript examples :
https://github.com/denysdovhan/wtfjs

#JavaScript #Fun
@ProgrammingTip

55 Checkboxes With Online Demo & Source Code 👾

http://freefrontend.com/css-checkboxes/

#CSS #UI
@ProgrammingTip

#Fun Developers @ProgrammingTip

The Majesty of Vue.js 📕
Author : Alex Kyriakidis 🖊

Simple explained 🙇🏻

#Book #Vue #JavaScript
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