CodeParkImplement two functions that chain other functions into one.
compose(f, g, h)returns a function that runs right to left:f(g(h(...args))).pipe(f, g, h)returns a function that runs left to right:h(g(f(...args))).
Rules for both:
- The first function to run receives all the arguments. Every later one receives the previous return value.
- With no functions, the returned function returns its first argument unchanged.
- Nothing runs until the returned function is called. The returned function can be called many times.
Input: compose(x => x + 1, x => x * 2)(5)
Output: 115 * 2 = 10 runs first, then 10 + 1.
Input: pipe(x => x + 1, x => x * 2)(5)
Output: 12
Input: pipe((a, b) => a + b, n => n * 10)(2, 3)
Output: 50