What are the differences between iterators and collections in programming?

What are the differences between iterators and collections in programming?

Iterators are objects that allow you to traverse through a collection, while collections are data structures that hold multiple items.

Can you give me an example of an iterator?

Sure! In Python, a list can be iterated using a for loop, which acts as an iterator to access each element.

What are some common types of collections?

Common types of collections include lists, sets, dictionaries, and tuples in Python.

When should I use an iterator instead of a collection?

Use an iterator when you want to process elements one at a time without needing to load the entire collection into memory.