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Make boost::distance traversal-category-aware (and constexpr in C++14)

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morinmorin
2017-06-30 20:02:53 +09:00
parent 452b1bb7e7
commit 69409ed63a
1 changed files with 4 additions and 3 deletions
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7
include/boost/range/distance.hpp
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@@ -15,18 +15,19 @@
# pragma once
#endif
#include <boost/iterator/distance.hpp>
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
#include <boost/range/difference_type.hpp>
namespace boost
namespace boost
{
template< class T >
inline BOOST_DEDUCED_TYPENAME range_difference<T>::type
inline BOOST_CXX14_CONSTEXPR BOOST_DEDUCED_TYPENAME range_difference<T>::type
distance( const T& r )
{
return std::distance( boost::begin( r ), boost::end( r ) );
return boost::distance( boost::begin( r ), boost::end( r ) );
}
} // namespace 'boost'