diff options
| author | Marc Mutz <marc.mutz@kdab.com> | 2019-05-13 20:43:27 +0200 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@kdab.com> | 2019-05-14 17:21:40 +0000 |
| commit | a73385e2cfd0455f09166cdb380876ba8b26fb5f (patch) | |
| tree | 02d837ce2b268089d7f8676b98a9db27ed6dcb58 /src/corelib/global/qglobal.cpp | |
| parent | 969e60e075b2560f499b7a98b502401a23c8c319 (diff) | |
Short live qExchange()!
This is a 1:1 replacement for std::exchange, and should be removed once
Qt fully depends on C++14. It's too versatile a tool to miss it, so
provide a copy.
[ChangeLog][QtCore][QtGlobal] Added qExchange(), a drop-in for C++14's std::exchange()
Change-Id: I31c4f1141e7a99f99ea65eb36ddf9d68b7847337
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global/qglobal.cpp')
| -rw-r--r-- | src/corelib/global/qglobal.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp index 88a61562cb..3436a19881 100644 --- a/src/corelib/global/qglobal.cpp +++ b/src/corelib/global/qglobal.cpp @@ -3806,6 +3806,17 @@ bool qunsetenv(const char *varName) */ /*! + \fn template <typename T, typename U = T> T qExchange(T &obj, U &&newValue) + \relates <QtGlobal> + \since 5.14 + + Replaces the value of \a obj with \a newValue and returns the old value of \a obj. + + This is Qt's implementation of std::exchange(). It differs from std::exchange() + only in that it is \c constexpr already in C++14, and available on all supported + compilers. +*/ +/*! \macro QT_TR_NOOP(sourceText) \relates <QtGlobal> |