inverses¶
-
std::string const &libsemigroups::CongruenceWrapper::inverses() const¶
Returns the inverses of
this
, or throws an exception if there aren’t any.- Complexity
Constant.
- Parameters
(None)
- See
set_inverses() for the meaning of the return value of this function.
- Throws
LibsemigroupsException – if no identity has been defined.
- Returns
A const reference to the inverses, a value of type std::string.