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Diffstat (limited to 'src/boost/libs/hana/example/optional/value.cpp')
-rw-r--r-- | src/boost/libs/hana/example/optional/value.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/optional/value.cpp b/src/boost/libs/hana/example/optional/value.cpp new file mode 100644 index 000000000..adbb7aac5 --- /dev/null +++ b/src/boost/libs/hana/example/optional/value.cpp @@ -0,0 +1,20 @@ +// 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/assert.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/optional.hpp> +#include <boost/hana/type.hpp> + +#include <string> +namespace hana = boost::hana; + + +int main() { + static_assert(hana::just('x').value() == 'x', ""); + BOOST_HANA_CONSTANT_CHECK(*hana::just(hana::type_c<int>) == hana::type_c<int>); + BOOST_HANA_RUNTIME_CHECK(hana::just(std::string{"abcd"})->size() == 4); + + // hana::nothing.value(); // compile-time error +} |