What are some examples of iterators in programming?

What are some examples of iterators in programming?

Iterators are objects that allow you to traverse through a collection, like lists or arrays. Examples include Python's iter() and Java's Iterator interface.

Can you explain how a Python iterator works?

Sure! In Python, an iterator is an object that implements the __iter__() and __next__() methods. You can use the iter() function to get an iterator from a collection.

What about in Java? How do I create an iterator?

In Java, you can create an iterator by using the Iterator interface. You typically call the iterator() method on a collection, like an ArrayList, to get an iterator.

Are there any built-in functions in JavaScript for iterators?

Yes! JavaScript has built-in iterators for arrays, strings, and other collections. You can use the Symbol.iterator method to create custom iterators.