Callback (computer programming)

A callback is often back on the level of the original caller.

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) the argument at a given time. This execution may be immediate as in a synchronous callback, or it might happen at a later point in time as in an asynchronous callback. Programming languages support callbacks in different ways, often implementing them with subroutines, lambda expressions, blocks, or function pointers.

  1. ^ "What is a callback function?". Stack Overflow. Retrieved 2018-05-16.