range_value.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "CeresEngine/Foundation/Traits/is_range.hpp"
#include "CeresEngine/Foundation/Traits/iter_value.hpp"
#include "CeresEngine/Foundation/Traits/iterator.hpp"
 
#include <iterator>
#include <type_traits>
 
namespace CeresEngine::traits {
 
    template<class R, class = void> struct range_value {};
 
    template<class R> struct range_value<R, std::enable_if_t<is_range_v<R>>> { using type = iter_value_t<iterator_t<R>>; };
 
    template<class R> using range_value_t = typename range_value<R>::type;
 
} // namespace CeresEngine::traits