diff options
| author | Marc Mutz <marc.mutz@qt.io> | 2022-10-07 08:52:26 +0200 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@qt.io> | 2022-10-08 15:12:28 +0200 |
| commit | 8cb4ada2a4aaa80cae411da6df9d07e8e7150a51 (patch) | |
| tree | 7cd00cedf0adb3fe9f9ad89d41885948b773db61 /src/corelib/global | |
| parent | 9bd287335b2b7a70e116f4ef955e9e12df9009d0 (diff) | |
[docs] Adjust qExchange() docs for the present, where C++17 is required [1/2]: 6.2
In C++17, std::exchange() is unconditionally available, so focus
attention on the missing constexpr.
Pick-to: 6.4 6.3 6.2
Change-Id: Ia09bf6da7bd62e5a41083cfc5253e30a0298099f
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global')
| -rw-r--r-- | src/corelib/global/qttypetraits.qdoc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/corelib/global/qttypetraits.qdoc b/src/corelib/global/qttypetraits.qdoc index 6bb1ceba2c..ab25e30cbf 100644 --- a/src/corelib/global/qttypetraits.qdoc +++ b/src/corelib/global/qttypetraits.qdoc @@ -64,8 +64,9 @@ 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. + only in that it is \c constexpr already before C++20. + + We strongly advise to use std::exchange() when you don't need the C++20 variant. Here is how to use qExchange() to implement move constructors: \code |