reverse_wrapper.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration.
 */
 
 
#ifndef CXXUTILS_REVERSE_WRAPPER_H
#define CXXUTILS_REVERSE_WRAPPER_H
 
 
namespace CxxUtils {
 

template <class C>
class reverse_wrapper
{
public:
  reverse_wrapper (C& r) : m_r (r) {}
  auto begin() { return m_r.rbegin(); }
  auto end() { return m_r.rend(); }
  C& m_r;
};
 

template <class T>
auto make_reverse_wrapper (T& r) { return reverse_wrapper(r); }
 
 
} // namespace CxxUtils
 
 
#endif // not CXXUTILS_REVERSE_WRAPPER_H