blob: debb82dcacb8a0a5979fb63e35e7e46bee53a7f6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
///////////////////////////////////////////////////////////////////////////////
/// \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
|
Swift