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
|
//
// arg_copy_test.cpp - copying a custom placeholder _1 to arg<1>
//
// Copyright 2016 Peter Dimov
//
// 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
//
#include <boost/is_placeholder.hpp>
#include <boost/bind/arg.hpp>
//
template<int I> struct ph
{
};
namespace boost
{
template<int I> struct is_placeholder< ::ph<I> >
{
enum _vt { value = I };
};
} // namespace boost
int main()
{
boost::arg<1> a1 = ph<1>();
(void)a1;
}
|
