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by marssaxman
3868 days ago
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The main reason asynchronous programming exists is that useful programs generally have to communicate with some part of the outside world, which does not share the CPU's clock. To a very near approximation, all device I/O is fundamentally asynchronous; synchronous I/O is either an abstraction created by a multitasking operating system, a spectacular waste of CPU time, or a careful optimization used in certain circumstances on an embedded device. Yes, you really can async your entire application; having learned to code on primitive home computers in the '80s, I generally prefer to. |
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