Function currying in JavaScript. Kind of.

curry.js

function makeCurry(callable) {
    return function () {
        var args = [];
        function inner() {
            args = args.concat(Array.prototype.slice.call(arguments));
            if (args.length >= callable.length) {
                return callable.apply(callable, args);
            }

            return inner;
        }

        return inner.apply(inner, arguments);
    };
}

function add(x, y, z) {
    return x + y + z;
}

var curryAdd = makeCurry(add);

console.log(curryAdd(1)(2)(3))


function sub(x, y, z) {
    return x - y - z;
}

var currySub = makeCurry(sub);

console.log(currySub(10)(1)(2));
console.log(currySub(10, 1)(2));
console.log(currySub(10, 2, 1));