Kyle Shevlin • 4/14/2019

Just Enough FP: Pure Functions

This article provides a clear, example-driven introduction to pure functions, a core concept in functional programming. It defines purity as functions whose output depends solely on inputs and which have no side effects. The author illustrates the definition with JavaScript code examples, showing both pure and impure functions, and discusses common pitfalls like reliance on global state or nested impure operations.

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#JavaScript #functional programming #side effects