* throw error if the argument is falsy.

* Looks for directives on the given node and adds them to the directive collection which is * sorted. * * @param node Node to search.

* Try to determine the default display value of an element * @param {String} nodeName

* Encode path using encodeUriSegment, ignoring forward slashes * * @param {string} path Path to encode * @returns {string}

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

* Return the DOM siblings between the first and last node in the given array. * @param {Array} array like object * @returns {DOMElement} object cont

* @ngdoc function * @name angular.isNumber * @module ng * @kind function * * @description * Determines if a reference is a `Number`. * * @para

* bidirectionally links two entries of the LRU linked list