06 August 2011

Design using Other Peoples' APIs

Where you are dependant upon somebody else's API, decouple from that API at the earliest possible opportunity so that the remainder of your system works in terms of your own abstractions rather than that somebody else's. This shields you from the random, spurious, and often unwarned changes they may make. It also enables you to place guards against the various stupidities they may likely perpetrate in the name of fashion or unthinkingness, and ensures that you are - as much as possible - forced to deal only with your own stupidities and unthinkingess.

This injunction includes decoupling from your own APIs where those are non-core to the subsystem under design.

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