length_const¶
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inline 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.