mirror of https://gitee.com/bigwinds/arangodb
36 lines
826 B
C++
Executable File
36 lines
826 B
C++
Executable File
// Copyright Daniel Wallin 2006. Use, modification and distribution is
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// subject to 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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#include <boost/parameter/keyword.hpp>
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#include <boost/parameter/aux_/maybe.hpp>
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#include <cassert>
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namespace test {
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BOOST_PARAMETER_KEYWORD(tag, kw)
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BOOST_PARAMETER_KEYWORD(tag, unused)
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template <class Args>
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int f(Args const& args)
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{
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return args[kw | 1.f];
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}
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} // namespace test
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int main()
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{
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using test::kw;
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using test::unused;
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using test::f;
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using boost::parameter::aux::maybe;
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assert(f((kw = 0, unused = 0)) == 0);
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assert(f(unused = 0) == 1);
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assert(f((kw = maybe<int>(), unused = 0)) == 1);
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assert(f((kw = maybe<int>(2), unused = 0)) == 2);
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return 0;
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}
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