Simple "in-function" memoize for AngularJs

$memoize

;(function (angular) {
  'use strict';
  
  angular
    .module('ng-utils', [])
    .factory('$memoize', memoize);
    
  function memoize() {
    return function (target) {
      return function () {
        var args = Array.prototype.slice.call(arguments),
            hash = '',
            argsLength = args.length,
            current = null;

        if (typeof target.memoize === 'undefined')
          target.memoize = {};
      
        while (argsLength--) {
          current = args[argsLength];
              
          if (current === Object(current)) {
            hash += JSON.Stringify(current)      
          } else {
            hash += current;   
          }
        }
  
        if (!(hash in target.memoize))
          target.memoize[hash] = target.apply(this, args);
          
        return target.memoize[hash];   
      };
    };
  }

})(angular);

/*
 * USAGE:
 * 
 * angular
 *   .module('example', ['ng-utils'])
 *   .factor('Search', ['$http', '$memoize', function ($http, $memoize) {
 *   
 *     return $memoize(search);
 *    
 *     function search(name) {
 *       return $http.get(config.endpoint, {
 *         params: { keyword: keywords }
 *       });
 *     }
 *   });
 */