functional basis

functional_basis.js

function addf (x) {
	return function(y) {
		return x + y;
	}
}

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

function mul (x, y) {
	return x * y;
}

function applyf (binary) {
	return function(x) {
		return function (y) {
			return binary(x, y);
		}
	}
}

var addf = applyf(add);

console.log(addf(3)(4));
console.log(applyf(mul)(5)(6));