Curry and uncurry

curry.js

Function.prototype.uncurryThis = function() {
    var f = this;
    return function() {
        var a = arguments, b = [].slice.call(a, 1);
        return f.apply(a[0], b);
    };
};

Function.prototype.curry = function() {
  var fn = this;
  var args = [].slice.call(arguments, 0);
  return function() {
    return fn.apply(this, args.concat([].slice.call(arguments, 0)));
  };
}