.. _program_listing_file_mesh_handle_concepts.hxx:

Program Listing for File concepts.hxx
=====================================

|exhale_lsh| :ref:`Return to documentation for file <file_mesh_handle_concepts.hxx>` (``mesh_handle/concepts.hxx``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
     This file is part of t8code.
     t8code is a C library to manage a collection (a forest) of multiple
     connected adaptive space-trees of general element classes in parallel.
   
     Copyright (C) 2026 the developers
   
     t8code is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
   
     t8code is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
   
     You should have received a copy of the GNU General Public License
     along with t8code; if not, write to the Free Software Foundation, Inc.,
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
   
   #pragma once
   
   #include <type_traits>
   
   namespace t8_mesh_handle
   {
   template <typename TType>
   concept T8MeshType = requires { typename TType::mesh_tag; };
   
   template <typename TType>
   concept T8MPISafeType
     = std::is_void_v<TType> || (std::is_trivially_copyable_v<TType> && std::is_standard_layout_v<TType>);
   }  // namespace t8_mesh_handle