/usr/include/sigc++-2.0/sigc++/type_traits.h is in libsigc++-2.0-dev 2.6.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /*
* Copyright 2002, The libsigc++ Development Team
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _SIGC_TYPE_TRAIT_H_
#define _SIGC_TYPE_TRAIT_H_
#include <sigc++config.h> //To get SIGC_SELF_REFERENCE_IN_MEMBER_INITIALIZATION
namespace sigc {
template <class T_type>
struct type_trait
{
typedef T_type& pass;
typedef const T_type& take;
};
template <class T_type, int N>
struct type_trait<T_type[N]>
{
typedef T_type*& pass;
typedef const T_type*& take;
};
template <class T_type>
struct type_trait<T_type&>
{
typedef T_type& pass;
typedef T_type& take;
};
template <class T_type>
struct type_trait<const T_type&>
{
typedef const T_type& pass;
typedef const T_type& take;
};
template<>
struct type_trait<void>
{
typedef void pass;
typedef void take;
};
template<typename T>
using type_trait_pass_t = typename type_trait<T>::pass;
template<typename T>
using type_trait_take_t = typename type_trait<T>::take;
} /* namespace sigc */
#endif /* _SIGC_TYPE_TRAIT_H_ */
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