How to use generics in TypeScript

This article will explain in detail how to use generics in TypeScript. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Generics

To avoid code duplication and create reusable types is an important part of writing concise code. Generics are a feature of TypeScript that allows us to write reusable types. Look at the following example:

Type Add = (a: t, b: t) = > Tconst addNumbers: Add = (a, b) = > {return a + b} const addStrings: Add = (a, b) = > {return a + b}

Put the correct type in the generic type of Add, which can be used to describe the addition of two numbers or the concatenation of two strings. We don't need to write a type for each function, we only need to do it once with generics. This not only saves us energy, but also makes our code more concise and less error-prone.

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