.. Copyright (c) 2022, 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.

Membership
==========

This page contains information about the methods of the :py:class:`Konieczny`
class related to testing membership.

.. py:method:: Konieczny.contains(self: Konieczny, x: Element) -> bool

   Test membership of an element.

   :param x: a possible element.
   :type x: Element

   :return: A ``bool``.

.. py:method:: Konieczny.__contains__(self: Konieczny, x: Element) -> bool

   Test membership of an element.

   :param x: a possible element.
   :type x: Element

   :return: A ``bool``.