In functional programming, a pure function is one that produces the same output for the same input every time it is called. This deterministic behavior ensures that the function's behavior is ...

This is pure, in that there’s nothing changed outside the function and there’s no observable behavior of the function other than returning the result. This is just like the mathematical function. s(n) ...

The term pure function, means that the function's return value is completely determined by its inputs and that executing the function produces no side effects. A function that is not pure is called ...