mirror of
https://github.com/boostorg/hana.git
synced 2026-02-01 08:32:11 +00:00
406cb49cc2
- Improve the brief description of make<XXX> - Rewrite the rationale for unspecified container types - Update comments on some runtime benchmarks - Rename std::decay_t(...) to std::decay_t<...> in Tuple reference - Document data types as being Tags, not types themselves
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
/*
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@copyright Louis Dionne 2015
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana.hpp>
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#include <boost/hana/ext/std/type_traits.hpp>
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#include <boost/fusion/include/find_if.hpp>
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#include <boost/fusion/include/make_vector.hpp>
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#include <boost/mpl/quote.hpp>
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#include <type_traits>
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namespace fusion = boost::fusion;
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namespace mpl = boost::mpl;
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using namespace boost::hana;
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int main() {
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{
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//! [hana]
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auto tuple = make_tuple(1, 'x', 3.4f);
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auto result = find_if(tuple, [](auto const& x) {
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return traits::is_integral(x);
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});
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//! [hana]
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(void)result;
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#if 0
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//! [hana-explicit]
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some_type result = find_if(tuple, [](auto const& x) {
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return traits::is_integral(x);
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});
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//! [hana-explicit]
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#endif
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}{
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//! [fusion]
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using Container = fusion::result_of::make_vector<int, char, float>::type;
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Container tuple = fusion::make_vector(1, 'x', 3.4f);
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using Predicate = mpl::quote1<std::is_integral>;
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using Result = fusion::result_of::find_if<Container, Predicate>::type;
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Result result = fusion::find_if<Predicate>(tuple);
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//! [fusion]
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(void)result;
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}
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}
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