original_string: public function delete_bit(string $id): ?int
    {
      if ( \bbn\str::is_uid($id) ){
        return $this->db->delete($this->class_cfg['tables']['user_options_bits'], [
          $this->class_cfg['arch']['user_options_bits']['id'] => $id
        ]);
      }
      return null;
    }
code: public function delete_bit(string $id): ?int
    {
      if ( \bbn\str::is_uid($id) ){
        return $this->db->delete($this->class_cfg['tables']['user_options_bits'], [
          $this->class_cfg['arch']['user_options_bits']['id'] => $id
        ]);
      }
      return null;
    }
code_tokens: public function delete_bit ( string $ id ) : ? int { if ( \ bbn \ str :: is_uid ( $ id ) ) { return $ this -> db -> delete ( $ this -> class_cfg [ 'tables' ] [ 'user_options_bits' ] , [ $ this -> class_cfg [ 'arch' ] [ 'user_options_bits' ] [ 'id' ] => $ id ] ) ; } return null ; }
docstring: Deletes a preference's bit
  
  @param string The bit's ID
  @return int|null
docstring_tokens: Deletes a preference s bit