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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/example/optional/searchable.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/optional/searchable.cpp b/src/boost/libs/hana/example/optional/searchable.cpp new file mode 100644 index 000000000..e95d451af --- /dev/null +++ b/src/boost/libs/hana/example/optional/searchable.cpp @@ -0,0 +1,27 @@ +// 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/all_of.hpp> +#include <boost/hana/assert.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/find_if.hpp> +#include <boost/hana/integral_constant.hpp> +#include <boost/hana/mod.hpp> +#include <boost/hana/not_equal.hpp> +#include <boost/hana/optional.hpp> +namespace hana = boost::hana; + + +auto odd = [](auto x) { + return x % hana::int_c<2> != hana::int_c<0>; +}; + +BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::just(hana::int_c<3>), odd) == hana::just(hana::int_c<3>)); +BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::just(hana::int_c<2>), odd) == hana::nothing); +BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::nothing, odd) == hana::nothing); + +BOOST_HANA_CONSTANT_CHECK(hana::all_of(hana::just(hana::int_c<3>), odd)); +BOOST_HANA_CONSTANT_CHECK(hana::all_of(hana::nothing, odd)); + +int main() { } |