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Diffstat (limited to 'src/boost/libs/hana/example/type/typeid.cpp')
-rw-r--r-- | src/boost/libs/hana/example/type/typeid.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/type/typeid.cpp b/src/boost/libs/hana/example/type/typeid.cpp new file mode 100644 index 000000000..f219aec39 --- /dev/null +++ b/src/boost/libs/hana/example/type/typeid.cpp @@ -0,0 +1,36 @@ +// 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/remove_if.hpp> +#include <boost/hana/tuple.hpp> +#include <boost/hana/type.hpp> + +#include <string> +namespace hana = boost::hana; + + +struct Cat { std::string name; }; +struct Dog { std::string name; }; +struct Fish { std::string name; }; + +bool operator==(Cat const& a, Cat const& b) { return a.name == b.name; } +bool operator!=(Cat const& a, Cat const& b) { return a.name != b.name; } +bool operator==(Dog const& a, Dog const& b) { return a.name == b.name; } +bool operator!=(Dog const& a, Dog const& b) { return a.name != b.name; } +bool operator==(Fish const& a, Fish const& b) { return a.name == b.name; } +bool operator!=(Fish const& a, Fish const& b) { return a.name != b.name; } + +int main() { + hana::tuple<Cat, Fish, Dog, Fish> animals{ + Cat{"Garfield"}, Fish{"Jaws"}, Dog{"Beethoven"}, Fish{"Nemo"} + }; + + auto mammals = hana::remove_if(animals, [](auto const& a) { + return hana::typeid_(a) == hana::type<Fish>{}; + }); + + BOOST_HANA_RUNTIME_CHECK(mammals == hana::make_tuple(Cat{"Garfield"}, Dog{"Beethoven"})); +} |