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| author | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-07-08 13:21:20 +0300 |
|---|---|---|
| committer | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-07-18 08:17:21 +0000 |
| commit | 337a7e96b62a2c05e9470f93f7f46dce7b75691f (patch) | |
| tree | 261500a105fc7b558e0dd83954fec5746979428e /src/gui | |
| parent | e46e112eb10850801218bd810ecaeb8fd29f4c34 (diff) | |
QStandardItem: use reserve() to optimize memory allocation
Change-Id: I09df41f6beaaeecc818f11a01206e9e4583fd93f
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Diffstat (limited to 'src/gui')
| -rw-r--r-- | src/gui/itemmodels/qstandarditemmodel.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/gui/itemmodels/qstandarditemmodel.cpp b/src/gui/itemmodels/qstandarditemmodel.cpp index 3861eb8b40..7b8d8ae2b7 100644 --- a/src/gui/itemmodels/qstandarditemmodel.cpp +++ b/src/gui/itemmodels/qstandarditemmodel.cpp @@ -1844,7 +1844,9 @@ QList<QStandardItem*> QStandardItem::takeColumn(int column) d->model->d_func()->columnsAboutToBeRemoved(this, column, column); QList<QStandardItem*> items; - for (int row = d->rowCount() - 1; row >= 0; --row) { + const int rowCount = d->rowCount(); + items.reserve(rowCount); + for (int row = rowCount - 1; row >= 0; --row) { int index = d->childIndex(row, column); QStandardItem *ch = d->children.at(index); if (ch) |