range.h

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 * VCLib                                                                     *
 * Visual Computing Library                                                  *
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 * Copyright(C) 2021-2025                                                    *
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#ifndef VCL_CONCEPTS_RANGES_RANGE_H
#define VCL_CONCEPTS_RANGES_RANGE_H
 
#include <ranges>
 
namespace vcl {
 
template<typename T>
concept Range = std::ranges::range<T>;
 
template<typename R, typename T>
concept RangeOf = Range<R> && std::same_as<std::ranges::range_value_t<R>, T>;
 
template<typename R, typename T>
concept InputRange =
    Range<R> && std::convertible_to<std::ranges::range_value_t<R>, T>;
 
template<typename R, typename T>
concept OutputRange = Range<R> && std::ranges::output_range<R, T> &&
                      std::same_as<std::ranges::range_value_t<R>, T>;
 
} // namespace vcl
 
#endif // VCL_CONCEPTS_RANGES_RANGE_H