Teresa  Jerde

Teresa Jerde

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Typescript Generics — Quick Intro

Typescript makes our life much easier. It brings OOP concepts into javascript and helps us to write better code. Among other features that Typescript offers us, there’s a less familiar one — Generic types.

What exactly are Generics types? When and why should I use it?

The problem:

The most common feature in Typescript is, well, to defined types. let us take this simple code for example:

We’ve created a function called echo that gets an argument and returns it. This function can get all types, It will work if you pass a string, a number, an object, etc… So if we want to add some Typescript we can add the type ‘any’ so the compiler knows it can get all kinds of types.

#web-development #javascript #best-practices #typescript

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Typescript Generics — Quick Intro

The Definitive Guide to TypeScript & Possibly The Best TypeScript Book

TypeScript Deep Dive

I've been looking at the issues that turn up commonly when people start using TypeScript. This is based on the lessons from Stack Overflow / DefinitelyTyped and general engagement with the TypeScript community. You can follow for updates and don't forget to ★ on GitHub 🌹

Reviews

  • Thanks for the wonderful book. Learned a lot from it. (link)
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  • Love how precise and clear the examples and explanations are! (link)
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Get Started

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Book is completely free so you can copy paste whatever you want without requiring permission. If you have a translation you want me to link here. Send a PR.

Other Options

You can also download one of the Epub, Mobi, or PDF formats from the actions tab by clicking on the latest build run. You will find the files in the artifacts section.

Special Thanks

All the amazing contributors 🌹

Share

Share URL: https://basarat.gitbook.io/typescript/

Author: Basarat
Source Code: https://github.com/basarat/typescript-book/ 
License: View license

#typescript #opensource 

Jenny Jabde

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How to Build Generic React Components with Typescript Generics

In this video tutorial, Santiago will show how to use Typescript Generics to build Generic React Components. Do you find yourself duplicating your code to do the same things multiple times? 
When building frontend applications, you may need to represent different entries in similar instances, for example aggregating search results within a single list. Separate typescript components are best to achieve this, but it can create problems such as code duplication which can slow down the process. Typescript generics provide an efficient solution to this problem by creating generic components.

⏱ TIMESTAMPS
0:00 - Intro
0:46 - Code Example
1:22 - Component Breakdown
3:58 - Using the Component

✔️ Santiago's code: https://codesandbox.io/s/typescript-generic-components-2zrus?file=/src/SelectList.tsx 

#typescript #generics #react 

Guide to Understanding Generics in Java

Introduction

Java is a type-safe programming language. Type safety ensures a layer of validity and robustness in a programming language. It is a key part of Java’s security to ensure that operations done on an object are only performed if the type of the object supports it.

Type safety dramatically reduces the number of programming errors that might occur during runtime, involving all kinds of errors linked to type mismatches. Instead, these types of errors are caught during compile-time which is much better than catching errors during runtime, allowing developers to have less unexpected and unplanned trips to the good old debugger.

Type safety is also interchangeably called strong typing.

Java Generics is a solution designed to reinforce the type safety that Java was designed to have. Generics allow types to be parameterized onto methods and classes and introduces a new layer of abstraction for formal parameters. This will be explained in detail later on.

There are many advantages of using generics in Java. Implementing generics into your code can greatly improve its overall quality by preventing unprecedented runtime errors involving data types and typecasting.

This guide will demonstrate the declaration, implementation, use-cases, and benefits of generics in Java.

#java #guide to understanding generics in java #generics #generics in java #guide to understanding generics in java

Teresa  Jerde

Teresa Jerde

1595021940

Typescript Generics — Quick Intro

Typescript makes our life much easier. It brings OOP concepts into javascript and helps us to write better code. Among other features that Typescript offers us, there’s a less familiar one — Generic types.

What exactly are Generics types? When and why should I use it?

The problem:

The most common feature in Typescript is, well, to defined types. let us take this simple code for example:

We’ve created a function called echo that gets an argument and returns it. This function can get all types, It will work if you pass a string, a number, an object, etc… So if we want to add some Typescript we can add the type ‘any’ so the compiler knows it can get all kinds of types.

#web-development #javascript #best-practices #typescript