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| author | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-05-17 12:51:26 +0200 |
|---|---|---|
| committer | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-05-18 02:09:11 +0200 |
| commit | 9a94c4a415179377197f02580ea8fbcb0c5ce517 (patch) | |
| tree | ba9cb9bf07668dccd922d9474b008714240d9892 /src/corelib/global/qglobal.h | |
| parent | 8b8ff64be273d9e74ac64d7efd1d5f6b2c70d362 (diff) | |
Long live qToUnderlying
"Cherry-pick" of C++2b's std::to_underlying.
[ChangeLog][QtCore][QtGlobal] The qToUnderlying function has been
added, to convert an value of enumeration type to its underlying
value.
Change-Id: Ia46bd8e4496e55174171ac2f0799eacbcca02cf9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global/qglobal.h')
| -rw-r--r-- | src/corelib/global/qglobal.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h index 52accb8031..481ee695ca 100644 --- a/src/corelib/global/qglobal.h +++ b/src/corelib/global/qglobal.h @@ -1177,6 +1177,13 @@ constexpr T qExchange(T &t, U &&newValue) return old; } +// like std::to_underlying +template <typename Enum> +constexpr std::underlying_type_t<Enum> qToUnderlying(Enum e) noexcept +{ + return static_cast<std::underlying_type_t<Enum>>(e); +} + #ifdef __cpp_conditional_explicit #define Q_IMPLICIT explicit(false) #else |