curry and partial. каррирование и частичное применение

curry-and-partial.js

// https://www.youtube.com/watch?v=ND8KQ5xjk7o

const partial = (fn, ...args) => (...rest) => fn(...args.concat(rest))

// 1
const curry = fn => (...args) =>
  fn.length > args.length
    ? curry(fn.bind(null, ...args));
    : fn(...args);

// 2
const curry = (fn, ...par) => {
  const curried = (...args) =>
    fn.length > args.length
      ? curry(fn.bind(null, ...args))
      : fn(...args);

  return par.length ? curried(...par) : curried;
};

Curry.js

/** 
 * создание каррированной функции,
 * используя gist - https://gist.github.com/monochromer/c95ac295f2a9ae7c231f
 * @param {string} name - имя функции
 * @param {Function} func - определение функции
 */
Function.method('curry', function ( ) {
    var slice = Array.prototype.slice,
        args = slice.apply(arguments),
        that = this;
    return function ( ) {
        return that.apply(null, args.concat(slice.apply(arguments)));
    };
});

es6-version.js

function curry(f, ...first) {
  return (...second) => f(...first, ...second)
}

uncurryish.js

// https://medium.com/devschacht/tom-harding-curry-on-wayward-son-293d1c4f455f
const uncurryish = f => {
  if (typeof f !== 'function')
    return f // Needn't curry!
  return (... xs) => uncurryish(
    xs.reduce((f, x) => f(x), f)
  )
}