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Diffstat (limited to 'src/boost/libs/hana/example/struct/searchable.cpp')
-rw-r--r-- | src/boost/libs/hana/example/struct/searchable.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/struct/searchable.cpp b/src/boost/libs/hana/example/struct/searchable.cpp new file mode 100644 index 000000000..aae5dbfa0 --- /dev/null +++ b/src/boost/libs/hana/example/struct/searchable.cpp @@ -0,0 +1,46 @@ +// Copyright Louis Dionne 2013-2017 +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#include <boost/hana/accessors.hpp> +#include <boost/hana/all_of.hpp> +#include <boost/hana/assert.hpp> +#include <boost/hana/define_struct.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/find.hpp> +#include <boost/hana/optional.hpp> +#include <boost/hana/second.hpp> +#include <boost/hana/string.hpp> + +#include <string> +namespace hana = boost::hana; + + +struct Person { + BOOST_HANA_DEFINE_STRUCT(Person, + (std::string, name), + (unsigned short, age) + ); +}; + +int main() { + Person john{"John", 30}; + + BOOST_HANA_RUNTIME_CHECK( + hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John") + ); + + BOOST_HANA_CONSTANT_CHECK( + hana::find(john, BOOST_HANA_STRING("foobar")) == hana::nothing + ); + + + BOOST_HANA_RUNTIME_CHECK( + hana::all_of(hana::accessors<Person>(), [&](auto a) { + return hana::second(a)(john) == hana::second(a)(john); + }) + ); + + // the above is equivalent to: + BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john)); +} |