Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace, with manual
unstaging of the actual definition and documentation in dist/,
src/corelib/doc/ and src/corelib/global/.

Task-number: QTBUG-99313
Change-Id: I4c7114444a325ad4e62d0fcbfd347d2bbfb21541
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

3 files changed, 4 insertions, 4 deletions

diff --git a/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp b/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
index 70fb1fe62d..b0b0500fab 100644
--- a/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_widgets_qmenu.cpp
@@ -34,7 +34,7 @@ exec(e->globalPos());
 //! [6]
 QMenu menu;
 QAction *at = actions[0]; // Assumes actions is not empty
-for (QAction *a : qAsConst(actions))
+for (QAction *a : std::as_const(actions))
     menu.addAction(a);
 menu.exec(pos, at);
 //! [6]
diff --git a/src/widgets/doc/snippets/qlistview-dnd/model.cpp b/src/widgets/doc/snippets/qlistview-dnd/model.cpp
index 045d1e81f9..be2189d1be 100644
--- a/src/widgets/doc/snippets/qlistview-dnd/model.cpp
+++ b/src/widgets/doc/snippets/qlistview-dnd/model.cpp
@@ -74,7 +74,7 @@ bool DragDropListModel::dropMimeData(const QMimeData *data,
 
 //! [6]
     insertRows(beginRow, rows, QModelIndex());
-    for (const QString &text : qAsConst(newItems)) {
+    for (const QString &text : std::as_const(newItems)) {
         QModelIndex idx = index(beginRow, 0, QModelIndex());
         setData(idx, text);
         beginRow++;
diff --git a/src/widgets/doc/snippets/updating-selections/window.cpp b/src/widgets/doc/snippets/updating-selections/window.cpp
index b47e15e084..b965b81008 100644
--- a/src/widgets/doc/snippets/updating-selections/window.cpp
+++ b/src/widgets/doc/snippets/updating-selections/window.cpp
@@ -42,7 +42,7 @@ void MainWindow::updateSelection(const QItemSelection &selected,
 {
     QModelIndexList items = selected.indexes();
 
-    for (const QModelIndex &index : qAsConst(items)) {
+    for (const QModelIndex &index : std::as_const(items)) {
         QString text = QString("(%1,%2)").arg(index.row()).arg(index.column());
         model->setData(index, text);
 //! [0] //! [1]
@@ -52,7 +52,7 @@ void MainWindow::updateSelection(const QItemSelection &selected,
 //! [2]
     items = deselected.indexes();
 
-    for (const QModelIndex &index : qAsConst(items)) {
+    for (const QModelIndex &index : std::as_const(items)) {
         model->setData(index, QString());
 }
 //! [2]