#pragma once #include #include #include #if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L) constexpr static bool cpp_17 = true; #else constexpr static bool cpp_17 = false; #endif template inline const char* str([[maybe_unused]] const T& v) { return ""; } extern std::string base62uuid(int l = 6);