has_difference_type.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 <type_traits>
 
namespace CeresEngine::traits {
 
    template<class T, class = void> struct has_difference_type : std::false_type {};
 
    template<class T> struct has_difference_type<T, std::void_t<typename T::value_type>> : std::true_type {};
 
    template<class T> bool constexpr has_difference_type_v = has_difference_type<T>::value;
} // namespace CeresEngine::traits