// Boost.Range library // // Copyright Thorsten Ottosen 2003-2004. Use, modification and // distribution is subject to the Boost Software License, Version // 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // For more information, see http://www.boost.org/libs/range/ // #ifndef BOOST_RANGE_SIZE_HPP #define BOOST_RANGE_SIZE_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/range/difference_type.hpp> #include <boost/assert.hpp> namespace boost { template< class T > inline BOOST_DEDUCED_TYPENAME range_difference<T>::type size( const T& r ) { BOOST_ASSERT( (boost::end( r ) - boost::begin( r )) >= 0 && "reachability invariant broken!" ); return boost::end( r ) - boost::begin( r ); } } // namespace 'boost' #endif