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Does the Iterator Pattern Stand the Test of Time?

· Java Zone

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In object-oriented programming, the iterator pattern is a design pattern in which an iterator is used to traverse a container and access the container's elements. The iterator pattern decouples algorithms from containers; in some cases, algorithms are necessarily container-specific and thus cannot be decoupled.

More about this pattern.

It is really hard to think about any other pattern that has been more successful. In particular, patterns have long been about overcoming shortcoming of the language or platform.

In this case, iterators has became part of both language and platform in most modern systems.

  • System.Collection.IEnumerable
  • java.util.Iterator
  • Python’s __iter__()

Basically, it is so good, it is everywhere.

The Java Zone is brought to you in partnership with JetBrains.  Learn about instant and clever code completion, on-the-fly code analysis and reliable refactoring tools with IntelliJ IDEA.

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Published at DZone with permission of Ayende Rahien , DZone MVB .

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