1 // Boost.Range library 2 // 3 // Copyright Thorsten Ottosen 2003-2006. Use, modification and 4 // distribution is subject to the Boost Software License, Version 5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at 6 // http://www.boost.org/LICENSE_1_0.txt) 7 // 8 // For more information, see http://www.boost.org/libs/range/ 9 // 10 11 #ifndef BOOST_RANGE_DISTANCE_HPP 12 #define BOOST_RANGE_DISTANCE_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif 17 18 #include <boost/range/begin.hpp> 19 #include <boost/range/end.hpp> 20 #include <boost/range/difference_type.hpp> 21 22 namespace boost 23 { 24 25 template< class T > 26 inline BOOST_DEDUCED_TYPENAME range_difference<T>::type 27 distance( const T& r ) 28 { 29 return std::distance( boost::begin( r ), boost::end( r ) ); 30 } 31 32 } // namespace 'boost' 33 34 #endif 35
