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| author | Marc Mutz <marc.mutz@qt.io> | 2021-12-07 15:48:35 +0100 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@qt.io> | 2021-12-11 03:15:11 +0000 |
| commit | 85e92f2e5f1d90fceac5d83cc97f8efc4f276397 (patch) | |
| tree | ab4f2ca4cfda41d5c4e1c423ab9ef5813e7c63d5 /src/corelib/tools/qvarlengtharray.qdoc | |
| parent | bae0a159d8657885e46751710519ca0c3cc69092 (diff) | |
QVarLengthArray: deprecate prepend()
All Qt 6 containers have "fast" prepend these days. Except
QVLA. Instead of enabling "fast" prepend for QVLA, slowing down
idiomatic QVLA use, simply deprecate prepend().
There appear to be no users of this function in qtbase outside tests.
[ChangeLog][QtCore][Deprecation Notices][QVarLengthArray] Deprecated
prepend() because QVarLengthArray is the only Qt container without a
"fast" prepend. If you require that functionality, even though it's a
linear operation, then use insert(cbegin(), ~~~) instead.
Change-Id: I39ff1dd7d4de7fc08d5380a5a7450dd8c8996fe2
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Diffstat (limited to 'src/corelib/tools/qvarlengtharray.qdoc')
| -rw-r--r-- | src/corelib/tools/qvarlengtharray.qdoc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/corelib/tools/qvarlengtharray.qdoc b/src/corelib/tools/qvarlengtharray.qdoc index b7e6cd6d6e..de57daf4e4 100644 --- a/src/corelib/tools/qvarlengtharray.qdoc +++ b/src/corelib/tools/qvarlengtharray.qdoc @@ -545,6 +545,8 @@ \fn template<class T, qsizetype Prealloc> void QVarLengthArray<T, Prealloc>::prepend(T &&value) \since 4.8 + \deprecated [6.3] This is slow. If you must, use \c{insert(cbegin(), ~~~)} instead. + Inserts \a value at the beginning of the array. |