| // 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 |
