js_curry.js

Function.method('curry', function(){
    var slice = Array.prototype.slice,
        args = slice.apply(arguments),
        that = this;
    return function(){
        var complete_pack = args.concat(slice.apply(arguments));
        if( complete_pack.length < that.arity ) {
            return that.curry.apply(that, complete_pack);
        }
        else return that.apply(null, complete_pack);
    };
});