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What does "callback" mean in programming?

callback is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.

Definition

A function passed as an argument to another function, to be called when an operation completes. Callbacks are common in asynchronous code and event handling.

Example

"Pass a callback that runs after the file has finished loading."

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