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- //
- // 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;
- }
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