Currying example in JS

curry.js

(function(){

var collection = [1, 2, 3, 4, 5, 6, 7],
    add10,
    newCollection;

function map(passedCollection, userFn){
	var newCollection = [];

	passedCollection.forEach(function(value){
		newCollection.push(userFn(value));
	});

	return newCollection;
}

function curry(userFn){
	var initialArgs = Array.prototype.slice.call(arguments, 1);

	return function(){
		return userFn.apply(null, initialArgs.concat(arguments[0]));
	}
}

function add(a, b){
	return a + b;
}

add10 = curry(add, 10);

newCollection = map(collection, add10);

console.log(newCollection);

})();