Pure Functions

Understanding pure functions is a fundamental aspect of functional programming that can transform how you approach coding. Imagine a function that, given the same input, always produces the same output—no surprises, no side effects.

This predictability is not just a nice-to-have; it can make your code easier to test, reason about, and maintain.

Let’s dive into what pure functions are, how they work, and why they’re so valuable in your programming toolkit.