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iterator

   Also found in: Wikipedia 0.01 sec.
(programming)iterator - An object or routine for accessing items from a list, array or stream one at a time.

By extension, the term can be used for an object or routine for accesing items from any data structure that can be viewed as a list. For example, a traverser is an iterator for tree-shaped data structures.

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Creational Patterns Structural Patterns Behavioral Patterns Abstract Factory Adapter Chain of Responsibility Builder Bridge Command Factory Method Composite Interpreter Prototype Decorator Iterator Singleton Facade Mediator Flyweight Memento Proxy Observer State Strategy Template Method Visitor
Looping bugs - detect mismatched Iterators and unchanged loop control variables
A forward iterator guides the algorithm through the data from beginning to end -- like reading words in a book.
 
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