The currying function shown can be made more flexible:

   var _slice = Array.prototype.slice;

   var curry = function() {
     var args = _slice.call(arguments);
     return function() {
       var args2 = _slice.call(arguments);
       return args[0].apply(this, args.slice(1).concat(args2));
     };
   };

As can the composition func:

   var compose = function(f, g) {
     return function() {
       var args =_slice.call(arguments);
       return f(g.apply(this, args));
     };
   };