@function _filter-function(
  $list,
  $function_name,
  $args...
) {
  $return_list: ();
  @if length($list) > 0 {
    @for $index from 1 through length($list) {
      $call-result: null;
      $item: nth($list, $index);
      $call-result: call(get-function($function_name), $item, $args...);
      @if $call-result {
        $return_list: append($return_list, $item);
      }
    }
  }
  @return $return_list;
}