Pure Function Example: A pure function that takes two numbers and returns their sum. function add(a, b) { return a + b; } console.log(add(2, 3)); // Output: 5 This function is pure because it ...

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) ...

Our _make_request function is impure and can fail. Try to send two similar requests with and without internet connection. The result will be different for the same input. That's why we must use ...