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Iterator Design Pattern

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Derek Banas 103 tutorials here
Programming

Get the Code: http://goo.gl/yODM3

Welcome to my Iterator Design Pattern Tutorial! The iterator design pattern allows you to access objects that are stored in many different collection types.

You do this by creating a common interface that these classes share. Then you have them provide you with an iterator that allows you to traverse the objects they contain.

Because they all share a common interface you can treat them polymorphically and eliminate a lot of duplicate code.