interval_set.h

// Description: Interval multi-set

#ifndef PASTELSYS_INTERVAL_SET_H
#define PASTELSYS_INTERVAL_SET_H

#include "pastel/sys/set/set_concept.h"

#include <range/v3/view/iota.hpp>

namespace Pastel
{

    template <typename Element>
    using Interval_Set = ranges::iota_view<Element>;

}

namespace Pastel
{

    template <
        typename Begin,
        typename End>
    decltype(auto) intervalSet(
        Begin&& begin, 
        End&& end)
    {
        return ranges::view::iota(
            std::forward<Begin>(begin),
            std::forward<End>(end));
    }

    template <
        typename Set,
        Requires<
            Models<Set, Set_Concept>
        > = 0
    >
    decltype(auto) intervalSet(Set&& set)
    {
        return Pastel::intervalSet(
            ranges::begin(set), ranges::end(set));
    }

}

#endif