SOURCE

function curry(fn){
    var args = Array.prototype.slice.call(arguments, 1);
    console.log("outer: ")
    console.log(arguments);
    return function(){
        var innerArgs = Array.prototype.slice.call(arguments);
        console.log("inner: ");
        console.log(arguments);
        var finalArgs = args.concat(innerArgs);
        console.log(finalArgs);
        return fn.apply(null, finalArgs);
    };
}

function add(num1, num2){
    return num1 + num2;
}
var curriedAdd = curry(add, 5);
console.log(curriedAdd(3));