Iterator

The Iterator design pattern provides a way to access the elements of an aggregate object sequentially without exposing its underlying representation.

Usage          High

UML class diagram

A visualization of the classes and objects participating in this pattern.

Sample code

This structural code demonstrates the Iterator pattern which provides for a way to traverse (iterate) over a collection of items without detailing the underlying structure of the collection.

Output

See also

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• Common Design Patterns
• Design Guidelines
• Documentation