Javascript Curry

curry.js

// curry function and accepts lists of parameters
function curry(fn) {
	// begin with an empty array of collected arguments
	var partialArgs = [];
	var f = function() {
		// append all passed in arguments to the arguments collection
		Array.prototype.push.apply(partialArgs, arguments);

		// if we have matched or exceeded the argument length of the containing function
		// call the function with the required length (extra parameters are ignored)
		if (partialArgs.length >= fn.length){

			// TODO: is 'this' appropriate here?
			fn.apply(this, Array.prototype.slice.call(partialArgs, 0, fn.length));
		}

		// return the function to collect more arguments
		return f;
	};

	// call and return the accumulator function
	return f();
}