What are generics in TypeScript?

What are generics in TypeScript?

Generics in TypeScript allow you to create reusable components that work with any data type. They provide a way to define functions, classes, or interfaces that can operate on different types while maintaining type safety.

Can you give me an example of a generic function?

Sure! Here's a simple example:

function identity<T>(arg: T): T {
    return arg;
}

This function takes an argument of type T and returns it, preserving the type.

How do generics improve type safety?

Generics improve type safety by allowing you to specify types at the time of function or class instantiation, reducing runtime errors and ensuring that the data types are consistent throughout your code.

What are some common use cases for generics?

Common use cases for generics include creating reusable data structures like linked lists, implementing generic APIs, and building libraries that can work with various data types without sacrificing type safety.