What is the difference between Iterable and Array in TypeScript?

What is the difference between Iterable and Array in TypeScript?

In TypeScript, an Array is a specific type of Iterable that holds elements of a specific type, while Iterable is a broader interface that can represent any collection of items that can be iterated over.

Can you give me an example of how to use both?

Sure! An Array can be created like this: let arr: number[] = [1, 2, 3];. An Iterable can be created using a generator function: function* gen() { yield 1; yield 2; }.

Are there performance differences between using Iterable and Array?

Yes, Arrays are optimized for performance in most cases, especially for indexed access, while Iterables can be less efficient due to their generality.

When should I use Iterable instead of Array?

Use Iterable when you need to work with different types of collections or when you want to create custom iteration logic.