Iterators

An iterator is a mechanism to access a collection's elements sequentially in a performant way. They are often used in loops. On the other hand, they are mutable, and careless use can lead to non-trivial bugs.

Visit the following resources to learn more:

• @official@Iterators | Collections (Scala 2.8 - 2.12) | Scala Documentation
• @article@Scala - Iterators