What are TypeScript generics and how do they work?

What are TypeScript generics and how do they work?

TypeScript generics allow you to create reusable components that can 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 code reusability?

Generics allow you to write a function or class once and use it with different types without duplicating code. This leads to cleaner, more maintainable code.

Are there any limitations to using generics?

Yes, while generics are powerful, they can sometimes lead to complex code and may be less intuitive for those unfamiliar with them. It's important to use them judiciously.