union_set.h

// Description: Union multi-set

#ifndef PASTELSYS_UNION_SET_H
#define PASTELSYS_UNION_SET_H

#include "pastel/sys/set/set_concept.h"
#include <range/v3/view/concat.hpp>

namespace Pastel
{

    template <
        typename... Set,
        Requires<
            Models<Set, Set_Concept>...
        > = 0>
    decltype(auto) unionSet(
        Set&&... setSet)
    {
        return ranges::view::concat(std::forward<Set>(setSet)...);
    }

}

#endif