| Brian Silverman | 355f11d | 2018-08-04 23:57:00 -0700 | [diff] [blame^] | 1 | #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED |
| 2 | #define BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED |
| 3 | |
| 4 | // |
| 5 | // owner_less.hpp |
| 6 | // |
| 7 | // Copyright (c) 2008 Frank Mori Hess |
| 8 | // Copyright (c) 2016 Peter Dimov |
| 9 | // |
| 10 | // Distributed under the Boost Software License, Version 1.0. (See |
| 11 | // accompanying file LICENSE_1_0.txt or copy at |
| 12 | // http://www.boost.org/LICENSE_1_0.txt) |
| 13 | // |
| 14 | // See http://www.boost.org/libs/smart_ptr/ for documentation. |
| 15 | // |
| 16 | |
| 17 | namespace boost |
| 18 | { |
| 19 | |
| 20 | template<class T = void> struct owner_less |
| 21 | { |
| 22 | typedef bool result_type; |
| 23 | typedef T first_argument_type; |
| 24 | typedef T second_argument_type; |
| 25 | |
| 26 | template<class U, class V> bool operator()( U const & u, V const & v ) const |
| 27 | { |
| 28 | return u.owner_before( v ); |
| 29 | } |
| 30 | }; |
| 31 | |
| 32 | } // namespace boost |
| 33 | |
| 34 | #endif // #ifndef BOOST_SMART_PTR_OWNER_LESS_HPP_INCLUDED |