* @ngdoc function * @name angular.copy * @module ng * @kind function * * @description * Creates a deep copy of `source`, which should be an obje

* @ngdoc function * @name angular.equals * @module ng * @kind function * * @description * Determines if two objects or two values are equivalent

* throw error if the argument is falsy.

* @ngdoc function * @name angular.bind * @module ng * @kind function * * @description * Returns a function which calls function `fn` bound to `s

* Computes a hash of an 'obj'. * Hash of a: * string is string * number is number as string * object is either result of calling $$hashKey func

* Determines if a value is a regular expression object. * * @private * @param {*} value Reference to check. * @returns {boolean} True if `value` i

* Checks if `obj` is a window object. * * @private * @param {*} obj Object to check * @returns {boolean} True if `obj` is a window obj.