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| author | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-01-14 15:09:36 +0300 |
|---|---|---|
| committer | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-01-14 12:49:59 +0000 |
| commit | 9c43f48d118ff869a9a621e1cea1ed2df81d2f37 (patch) | |
| tree | 2758ed5b1b1451626668d6bc9e39162b2c5730c5 /src/plugins/winrt | |
| parent | a12f3d6fee700fb19b51b85934acddf536c483cf (diff) | |
| download | qtmultimedia-9c43f48d118ff869a9a621e1cea1ed2df81d2f37.tar.gz | |
fix expensive iteration over QMap::keys() and QHash::keys()
Change-Id: I244aa1ecf006774ebe5fb9bb5b22d37142186e39
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
Diffstat (limited to 'src/plugins/winrt')
| -rw-r--r-- | src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp b/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp index 8e806dcbf..9f5bb78f6 100644 --- a/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp +++ b/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp @@ -349,8 +349,9 @@ int QWinRTVideoDeviceSelectorControl::cameraOrientation(const QString &deviceNam QList<QByteArray> QWinRTVideoDeviceSelectorControl::deviceNames() { QList<QByteArray> devices; - foreach (const QString &device, g->deviceIndex.keys()) - devices.append(device.toUtf8()); + devices.reserve(g->deviceIndex.size()); + for (auto it = g->deviceIndex.keyBegin(), end = g->deviceIndex.keyEnd(); it != end; ++it) + devices.append((*it).toUtf8()); return devices; } |