FunctionalProgrammingbeginner

Pure double function

📖 Usage Example

function double(n) { return n * 2; }
double(5); // 10
double(5); // 10 — deterministic

Pure functions are deterministic — calling them again with the same args gives the same result.

Pure Function — Double

Create a pure function that doubles a number without modifying any external state.

Challenge: Implement a double function that takes a number and returns it multiplied by 2.

💡 Hints (3)

2/25