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My conference session How to Design a Good API and Why it Matters has always drawn large crowds; on InfoQ was the third most viewed content last year. When I presented this session as an invited talk at OOPSLA 2006, I was given the opportunity to write an abstract for the proceedings. In place of an ordinary abstract I decided to try something a bit unusual: I distilled the essence of the talk down to a modest collection of pithy maxims, in the spirit of Jon Bentley's classic Bumper-Sticker Computer Science, Item 6 in his excellent book,More Programming Pearls: Confessions of a Coder (Addison-Wesley, 1988). It is my hope that these maxims provide a concise summary of the key points of API design, in easily digestible form: |
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!http://www.infoq.com/resource/articles/API-Design-Joshua-Bloch/en/smallimage/image_api.jpg!
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All programmers are API designers. Good programs are modular, and intermodular boundaries define APIs. Good modules get reused.
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