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view DEPENDENCIES/generic/include/boost/proto/functional/range/empty.hpp @ 102:f46d142149f5
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author | Chris Cannam |
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date | Mon, 07 Sep 2015 11:13:41 +0100 |
parents | 2665513ce2d3 |
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/////////////////////////////////////////////////////////////////////////////// /// \file empty.hpp /// Proto callables for boost::empty() // // Copyright 2012 Eric Niebler. Distributed under 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) #ifndef BOOST_PROTO_FUNCTIONAL_RANGE_EMPTY_HPP_EAN_27_08_2012 #define BOOST_PROTO_FUNCTIONAL_RANGE_EMPTY_HPP_EAN_27_08_2012 #include <boost/range/empty.hpp> #include <boost/proto/proto_fwd.hpp> namespace boost { namespace proto { namespace functional { // A PolymorphicFunctionObject that wraps boost::empty() struct empty { BOOST_PROTO_CALLABLE() typedef bool result_type; template<typename Rng> bool operator()(Rng const &rng) const { return boost::empty(rng); } }; }}} #endif