December 2015
Beginner to intermediate
195 pages
2h 52m
English
Content preview from Java Design PatternsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 10
Iterator Patterns
GoF Definition: Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.
Concept
Iterators are generally used to traverse a container to access its elements.
Real-Life Example
Suppose there are two companies: Company A and Company B. Company A stores its employee records (name, etc.) in a linked list and Company B stores its employee data in a big array. One day the two companies decide to work together. The iterator pattern is handy in such a situation. We need not write codes from scratch. We’ll have a common interface through which we can access data ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.