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原创 什么是回调函数？

什么是回调函数？在编程中，总是会听到回调函数这个字眼，但回调函数究竟是什么尼？，维基百科的解释是这样子的：In computer programming, a callback, also known as a “call-after”[1] function, is any executable code that is passed as an argument to other code; that other code is expected to call back (execute) th