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🆕 [mp_unique_if] Support for mp_unique with a predicate

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Problem:
- `mp_unique` doesn't support custom predicates.

Solution:
- Add `mp_unique_if` and `mp_unique_if_q` which allow to remove duplicates elements with a predicate.
This commit is contained in:
Kris Jusiak
2019-12-03 15:12:55 -07:00
parent f64bc319c0
commit aa11577812
5 changed files with 135 additions and 0 deletions
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test/mp_unique_if.cpp
+54
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// Copyright 2015 Peter Dimov.
// Copyright 2019 Kris Jusiak.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <type_traits>
#include <tuple>
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_unique_if;
{
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<>, std::is_same>,mp_list<>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void>, std::is_same>,mp_list<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void>, std::is_same>,mp_list<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void>, std::is_same>,mp_list<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void, void>, std::is_same>,mp_list<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int>, std::is_same>,mp_list<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void, int, int, int>, std::is_same>,mp_list<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, void, int, int, void, int, int, int>, std::is_same>,mp_list<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, char[]>, std::is_same>,mp_list<void, int, char[]>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, char[], void, int, char[], void, int, char[]>, std::is_same>,mp_list<void, int, char[]>>));
}
{
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<>, std::is_same>,std::tuple<>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void>, std::is_same>,std::tuple<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void>, std::is_same>,std::tuple<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void>, std::is_same>,std::tuple<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void, void>, std::is_same>,std::tuple<void>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int>, std::is_same>,std::tuple<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void, int, int, int>, std::is_same>,std::tuple<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, void, int, int, void, int, int, int>, std::is_same>,std::tuple<void, int>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, char[]>, std::is_same>,std::tuple<void, int, char[]>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, char[], void, int, char[], void, int, char[]>, std::is_same>,std::tuple<void, int, char[]>>));
}
return boost::report_errors();
}