'use strict';
  
  var callable     = require('../../object/valid-callable')
    , defineLength = require('../_define-length')
  
    , apply = Function.prototype.apply;
  
  module.exports = function () {
  	var fn = callable(this);
  
  	return defineLength(function () {
  		return !apply.call(fn, this, arguments);
  	}, fn.length);
  };