JavaScript function that allows the execution of a Function once

function-once.js

var Once = (function () {
    "use strict";

    var A, F, func;

    A = [];
    F = function () { return undefined; };

    func = function (f) {
        var ret, ran, retValue;
        ran = false;
        ret = function () {
            if (ran) {
                return retValue;
            }
            ran = true;
            retValue = F.apply.call(f, this, A.slice.call(arguments, 0));
            return retValue;
        };
        return ret;
    };

    return func;
}());