A callback is a function in JavaScript that runs after a specific task is completed. Instead of waiting for the task to finish, the callback allows other things to happen in the meantime and triggers ...

Reentrancy attacks use the sequential execution of smart contract functions along with external calls to form a loop in which attackers can execute specific functions multiple times before they ...

Nested callbacks and the pyramid of doom Callbacks work well for handling asynchronous code, but they get tricky when you start coordinating multiple asynchronous functions. For example, if we ...

If you write JavaScript, you have probably used higher-order functions and not even noticed. If you have ever replaced a for loop with an array method, you’ve used higher-order functions.

Callbacks are references to executable code that higher levels of software pass into a function. These callbacks have the ability to greatly increase the portability and reuse of embedded software, ...