curry and pipe playground

curry.js

const pipe = (...functions) => startingValue => functions.reduce((actualValue, fn) => fn(actualValue), startingValue)

const sumTwo = (a) => a + 2
const mult = (a) => a + 2

const repeat = times => fn => Array(times).fill(fn)

const doTimes = times => fn => x => pipe(...repeat(times)(fn))(x)

const sumTwo4Times = doTimes(4)(sumTwo)

sumTwo4Times(4)


// var curry = (fn) => (...args) => () => fn(...args)
const curry = function (fn) {
  const arity = fn.length

  return function resolve (...args) {
    console.log(args)

    return args.length === arity ?
      fn(...args) : 
//       function (foo) {
//         console.log(foo)
//       }
      function (...foo) {
        return resolve([...args, ...foo])
      }
  }
}

const sum = function(a, b) {
  return a + b;
}

curry(sum)(2, 4)