length_constΒΆ

size_t libsemigroups::FroidurePinBase::length_const(element_index_type pos) const

Returns the length of the element in position pos of the semigroup.

The parameter pos must be a valid position of an already enumerated element of the semigroup, or a LibsemigroupsException will be thrown. This member function causes no enumeration of the semigroup.