bind.js

/**
 * bind
 * Takes a function and returns a new one that will always have a particular context.
 * If arguments are given, curry will happen: http://ejohn.org/blog/partial-functions-in-javascript/
 * 
 * @param   {Function}  fn          Function whose context will be changed
 * @param   {Object}    [ctx=this]  the obejct to which the context will be set
 * @param   {Mixed}     [args...]   Arguments to be passed to the resulting function
 * @returns {Function}
 */
var bind = function (fn, ctx /*,args*/) {
    var args = [].slice.call(arguments, 2);
    return function () {
        return fn.apply(ctx || this, args.concat([].slice.call(arguments, 0)));
    };
}