Пример #1
0
 /**
  * Filter the WFArray according to function $fn. If calling $fn($item)
  * returns true, include the item in the result, otherwise exclude it.
  *
  * @param WFFunction A WFFunction that returns true to include the item and false to exclude it.
  * @return WFArray The filtered array.
  */
 public function filter(WFFunction $fn)
 {
     $filtered = new WFArray();
     foreach ($this as $entry) {
         $include = $fn->call($entry);
         if ($include) {
             $filtered->append($entry);
         }
     }
     return $filtered;
 }