/usr/include/mia-2.0/mia/core/refholder.hh is in libmia-2.0-dev 2.0.13-1.
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 | /* -*- mia-c++ -*-
*
* This file is part of MIA - a toolbox for medical image analysis
* Copyright (c) Leipzig, Madrid 1999-2013 Gert Wollny
*
* MIA 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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIA; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include <mia/core/defines.hh>
#include <memory>
NS_MIA_BEGIN
/**
\ingroup misc
\brief A class to make a const reference not so const
This is a little hepler class to make it possible to change what
a constant reference member variable points to after construction of a class.
\tparam T the type a reference is used form
*/
template <typename T>
class TRefHolder {
public:
/// pointer type of this reference holder.
typedef std::shared_ptr<TRefHolder<T> > Pointer;
/// the type of the actual reference this class holds
typedef const T& const_reference;
/**
Constructor
\param r the const reference to be hold
*/
TRefHolder(const_reference r):
m_r(r){}
/// returns the reference variable to allow seemless usage
operator const_reference(){return m_r;}
private:
const_reference m_r;
};
NS_MIA_END
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