What is the difference between Iterable and Iterator in TypeScript?

What is the difference between Iterable and Iterator in TypeScript?

In TypeScript, an Iterable is an object that can be iterated over, like arrays or strings, while an Iterator is an object that provides a way to access elements of an Iterable one at a time.

Can you give me an example of each?

Sure! An example of an Iterable is an array: const arr = [1, 2, 3];. An Iterator can be created using the Symbol.iterator method: const iterator = arr[Symbol.iterator]();.

How do I use an Iterator to loop through an Iterable?

You can use a while loop with the next() method of the Iterator. For example: let result = iterator.next(); while (!result.done) { console.log(result.value); result = iterator.next(); }.

Are there any performance differences between using Iterable and Iterator?

Generally, Iterators can be more memory efficient for large data sets since they allow you to process items one at a time without loading the entire Iterable into memory.