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// 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"}));
}
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