add_rule(word_type const&, word_type const&)

void libsemigroups::FpSemigroupInterface::add_rule(word_type const &u, word_type const &v)

Add a rule.

Return

(None)

Complexity

Constant.

Parameters

• u: the left-hand side of the rule being added.

• v: the right-hand side of the rule being added.

Exceptions

• LibsemigroupsException: if any of the following apply:

  • started() returns true; or

  • u or v contains a letter that is out of bounds.