JavaScript: currying function

js-curry

  // Currying: f(f1,...,fn) -> f(f1,...,fk)(fk+1,...,fn)
  // Usage: f.curry(f1,...,fk) -> g(fk+1,...fn) == f(f1,...,fn)  
  Function.prototype.curry = function() { //f(f1,...,fk)
    if( arguments.length == 0 )
      return this;
    var args = arguments; 
    var fn = this;
    return function() { // g(fk+1,...,fn)
      var prefix = Array.prototype.slice.call(args);
      var suffix = Array.prototype.slice.call(arguments);
      fn.apply(this, prefix.concat(suffix));
    }
  }