current_logtalk_flag/2
current_logtalk_flag(Flag, Value)Enumerates, by backtracking, the current Logtalk flag values.
current_logtalk_flag(?atom, ?atom)
- Flag is neither a variable nor an atom:
type_error(atom, Flag)
- Flag is not a valid flag:
domain_error(valid_flag, Value)
| ?- current_logtalk_flag(xml, Value).