A function where the return value is only determined by its input values, without observable side effects.

"Pure functions are a fundamental concept in functional programming, making code easier to test and reason about."

A function defined without a name, often used as an argument to other functions.

"Anonymous functions in JavaScript are commonly used for callbacks and event handlers."

A humorous term referring to the hope that simply rebuilding a project or system will somehow fix a problem without understanding the underlying cause.

"Relying on the magic rebuild fairy often leads to wasted time and frustration when the same issues reoccur."

A playful term for dynamic reprogramming, allowing for the modification or extension of a programming language or environment at runtime.

"Duck punching in JavaScript can be used to add or modify methods of built-in objects or classes."

The on-demand availability of computer system resources, especially data storage and computing power, without direct active management by the user.

"Cloud computing services like AWS and Azure allow businesses to scale infrastructure according to demand."