code: function map(array, expression) {
  
    if(!isArray(array) || isUndefined(expression)) {
      return array;
    }
  
    return array.map(function (elm) {
      return $parse(expression)(elm);
    });
  }
docs: @name map
  @kind function
  
  @description
  Returns a new Array with the results of each expression execution.