25 lines
680 B
C++
25 lines
680 B
C++
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/*=============================================================================
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Copyright (c) 2017 Paul Fultz II
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unpack_uncallable.cpp
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#include <boost/hof/unpack.hpp>
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struct foo
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{};
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namespace boost { namespace hof {
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template<>
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struct unpack_sequence<foo>
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{
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template<class F, class S>
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constexpr static auto apply(F&&, S&& s) BOOST_HOF_RETURNS(s.bar);
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};
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}
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int main() {
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boost::hof::unpack(boost::hof::always(1))(foo{});
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}
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