/*!
* \file void.h
* \brief Template meta-programming void helpers
*
* Copyright (C) 2018 Christos Choutouridis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see .
*/
#ifndef __utl_meta_void_h__
#define __utl_meta_void_h__
#include
#include
/*! \ingroup meta
* \defgroup void
* void_ support header
*/
//! @{
namespace utl {
/*!
* Like boost::mpl we made void_ a complete type to allow it to be
* instantiated so that it can be passed in as an object that can be
* used to select an overloaded function.
*/
struct void_ {
typedef void_ type;
};
template
struct is_void_
: false_ { };
template<>
struct is_void_
: true_ { };
template
struct is_not_void_
: true_ { };
template<>
struct is_not_void_
: false_ { };
}
//!@}
#endif /* __utl_meta_void_h__ */