DrBoolean

f2.toString = function() {
  return fx.toString()+'('+args.join(', ')+')';
}

DrBoolean

console.log(add)
//  function f1() {
//    var args = Array.prototype.slice.call(arguments, 0);
//    if (args.length >= arity) return fx.apply(null, args);
//
//    function f2() {
//      return f1.apply(null, args.concat(Array.prototype.slice.call(arguments, 0))); 
//    }
//    return f2;
//  };

DrBoolean

console.log(inc)
// function add(x,y){ return x + y }(1)

DrBoolean

f1.toString = function() { return fx.toString(); }

DrBoolean

console.log(add)
// function add(x, y){ return x + y }

DrBoolean

var incAll = map(inc);
console.log(incAll)
// function map(f, xs){ return xs.map(f) }(function add(x, y){ return x + y }(1))

DrBoolean

function fToString(f) {
  return f.name ? f.name : f.toString();
}

DrBoolean

console.log(incAll)
// map(add(1))

DrBoolean

function curry(fx) {
  var arity = fx.length;

  function f1() {
    var args = Array.prototype.slice.call(arguments, 0);
    if (args.length >= arity) return fx.apply(null, args);

    function f2() {
      return f1.apply(null, args.concat(Array.prototype.slice.call(arguments, 0))); 
    }

DrBoolean

var compose = function() {
  var fns = arguments;

  function f(result) {
    for (var i = fns.length - 1; i > -1; i--) {
      result = fns[i].call(this, result);
    }
    return result;
  };