.. Copyright (c) 2019-22, J. D. Mitchell

   Distributed under the terms of the GPL license version 3.

   The full license is in the file LICENSE, distributed with this software.

   This file was auto-generated by docs/generate_from_yml.py, do not edit.

Alphabet + letters
==================
.. cpp:namespace:: libsemigroups

This page contains information about the functionality for manipulating the alphabet of a :cpp:any:`Presentation` object.

.. cpp:namespace-pop::


.. doxygenfunction:: libsemigroups::Presentation::alphabet() const noexcept
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::alphabet(size_type)
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::alphabet(word_type const&)
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::alphabet(word_type&&)
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::alphabet_from_rules()
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::contains_empty_word() const noexcept
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::contains_empty_word(bool) noexcept
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::in_alphabet(letter_type) const
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::index(letter_type) const
   :project: libsemigroups

.. doxygenfunction:: libsemigroups::Presentation::letter(size_type) const
   :project: libsemigroups
