underlying_value.hpp

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#pragma once
 
/// @file userver/utils/underlying_value.hpp
/// @brief @copybrief utils::UnderlyingValue
/// @ingroup userver_universal
 
#include <type_traits>
 
USERVER_NAMESPACE_BEGIN
 
namespace utils {
 
/// @brief Function that extracts integral value from enum or StrongTypedef
template <class T, std::enable_if_t<std::is_enum_v<T>, int> /*Enable*/ = 0>
constexpr auto UnderlyingValue(T v) noexcept {
    return static_cast<std::underlying_type_t<T>>(v);
}
 
}  // namespace utils
 
USERVER_NAMESPACE_END