Don't allocate unneeded temporary containers

Fix clazy warnings: allocating an unneeded temporary container
[clazy-container-anti-pattern]

Change-Id: I4b4c2c634eea650bbdf3c12d982a17f899fc94ec
Reviewed-by: Alessandro Portale <[email protected]>
Reviewed-by: David Schulz <[email protected]>
Reviewed-by: hjk <[email protected]>

25 files changed, 118 insertions, 93 deletions

diff --git a/src/libs/utils/settingsaccessor.cpp b/src/libs/utils/settingsaccessor.cpp
index ea967caeb3d..5bcee4211c6 100644
--- a/src/libs/utils/settingsaccessor.cpp
+++ b/src/libs/utils/settingsaccessor.cpp
@@ -49,8 +49,8 @@ namespace Utils {
 QMessageBox::StandardButtons SettingsAccessor::Issue::allButtons() const
 {
     QMessageBox::StandardButtons result = QMessageBox::NoButton;
-    for (const QMessageBox::StandardButton &b : buttons.keys())
-        result |= b;
+    for (auto it = buttons.cbegin(); it != buttons.cend(); ++it)
+        result |= it.key();
     return result;
 }
 
diff --git a/src/plugins/android/avddialog.cpp b/src/plugins/android/avddialog.cpp
index 42498b64675..a9ea27f6bc1 100644
--- a/src/plugins/android/avddialog.cpp
+++ b/src/plugins/android/avddialog.cpp
@@ -80,7 +80,7 @@ AvdDialog::AvdDialog(int minApiLevel, AndroidSdkManager *sdkManager, const QStri
     connect(&m_hideTipTimer, &QTimer::timeout, this, []() { Utils::ToolTip::hide(); });
 
     parseDeviceDefinitionsList();
-    for (const QString &type : DeviceTypeToStringMap.values())
+    for (const QString &type : DeviceTypeToStringMap)
         m_avdDialog.deviceDefinitionTypeComboBox->addItem(type);
 
     connect(m_avdDialog.deviceDefinitionTypeComboBox,
diff --git a/src/plugins/autotest/gtest/gtestparser.cpp b/src/plugins/autotest/gtest/gtestparser.cpp
index 6d0dd18d2fb..2af311e89c1 100644
--- a/src/plugins/autotest/gtest/gtestparser.cpp
+++ b/src/plugins/autotest/gtest/gtestparser.cpp
@@ -101,7 +101,7 @@ static bool handleGTest(QFutureInterface<TestParseResultPtr> futureInterface,
     GTestVisitor visitor(document);
     visitor.accept(ast);
 
-    QMap<GTestCaseSpec, GTestCodeLocationList> result = visitor.gtestFunctions();
+    const QMap<GTestCaseSpec, GTestCodeLocationList> result = visitor.gtestFunctions();
     QString proFile;
     const QList<CppTools::ProjectPart::Ptr> &ppList = modelManager->projectPart(filePath);
     if (!ppList.isEmpty())
@@ -109,7 +109,8 @@ static bool handleGTest(QFutureInterface<TestParseResultPtr> futureInterface,
     else
         return false; // happens if shutting down while parsing
 
-    for (const GTestCaseSpec &testSpec : result.keys()) {
+    for (auto it = result.cbegin(); it != result.cend(); ++it) {
+        const GTestCaseSpec &testSpec = it.key();
         GTestParseResult *parseResult = new GTestParseResult(base);
         parseResult->itemType = TestTreeItem::TestSuite;
         parseResult->fileName = filePath;
@@ -119,7 +120,7 @@ static bool handleGTest(QFutureInterface<TestParseResultPtr> futureInterface,
         parseResult->disabled = testSpec.disabled;
         parseResult->proFile = proFile;
 
-        for (const GTestCodeLocationAndType &location : result.value(testSpec)) {
+        for (const GTestCodeLocationAndType &location : it.value()) {
             GTestParseResult *testSet = new GTestParseResult(base);
             testSet->name = location.m_name;
             testSet->fileName = filePath;
@@ -134,7 +135,7 @@ static bool handleGTest(QFutureInterface<TestParseResultPtr> futureInterface,
 
         futureInterface.reportResult(TestParseResultPtr(parseResult));
     }
-    return !result.keys().isEmpty();
+    return !result.isEmpty();
 }
 
 bool GTestParser::processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
diff --git a/src/plugins/autotest/testresultmodel.cpp b/src/plugins/autotest/testresultmodel.cpp
index ca316626418..d31ca0c5db9 100644
--- a/src/plugins/autotest/testresultmodel.cpp
+++ b/src/plugins/autotest/testresultmodel.cpp
@@ -395,11 +395,10 @@ int TestResultModel::maxWidthOfLineNumber(const QFont &font)
 int TestResultModel::resultTypeCount(ResultType type) const
 {
     int result = 0;
-
-    for (const auto &id : m_testResultCount.keys()) {
+    for (auto it = m_testResultCount.cbegin(); it != m_testResultCount.cend(); ++it) {
         // if we got a result count from the framework prefer that over our counted results
-        int reported = m_reportedSummary[id].value(type);
-        result += reported != 0 ? reported : m_testResultCount.value(id).value(type);
+        int reported = m_reportedSummary[it.key()].value(type);
+        result += reported != 0 ? reported : it.value().value(type);
     }
     return result;
 }
diff --git a/src/plugins/autotest/testresultspane.cpp b/src/plugins/autotest/testresultspane.cpp
index de3fb8ca7c1..fc7d63c066a 100644
--- a/src/plugins/autotest/testresultspane.cpp
+++ b/src/plugins/autotest/testresultspane.cpp
@@ -507,9 +507,10 @@ void TestResultsPane::initializeFilterMenu()
     textAndType.insert(ResultType::MessageDebug, tr("Debug Messages"));
     textAndType.insert(ResultType::MessageWarn, tr("Warning Messages"));
     textAndType.insert(ResultType::MessageInternal, tr("Internal Messages"));
-    for (ResultType result : textAndType.keys()) {
+    for (auto it = textAndType.cbegin(); it != textAndType.cend(); ++it) {
+        const ResultType &result = it.key();
         QAction *action = new QAction(m_filterMenu);
-        action->setText(textAndType.value(result));
+        action->setText(it.value());
         action->setCheckable(true);
         action->setChecked(result != ResultType::MessageInternal || !omitIntern);
         action->setData(int(result));
diff --git a/src/plugins/autotest/testsettings.cpp b/src/plugins/autotest/testsettings.cpp
index 2b7601834e3..323ad9817b6 100644
--- a/src/plugins/autotest/testsettings.cpp
+++ b/src/plugins/autotest/testsettings.cpp
@@ -70,13 +70,14 @@ void TestSettings::toSettings(QSettings *s) const
     s->setValue(popupOnFailKey, popupOnFail);
     s->setValue(runAfterBuildKey, int(runAfterBuild));
     // store frameworks and their current active and grouping state
-    for (const Utils::Id &id : frameworks.keys()) {
-        s->setValue(id.toString(), frameworks.value(id));
+    for (auto it = frameworks.cbegin(); it != frameworks.cend(); ++it) {
+        const Utils::Id &id = it.key();
+        s->setValue(id.toString(), it.value());
         s->setValue(id.toString() + groupSuffix, frameworksGrouping.value(id));
     }
     // ..and the testtools as well
-    for (const Utils::Id &id : tools.keys())
-        s->setValue(id.toString(), tools.value(id));
+    for (auto it = tools.cbegin(); it != tools.cend(); ++it)
+        s->setValue(it.key().toString(), it.value());
     s->endGroup();
 }
 
diff --git a/src/plugins/clearcase/clearcaseplugin.cpp b/src/plugins/clearcase/clearcaseplugin.cpp
index d8765f8bca8..8291f8e9475 100644
--- a/src/plugins/clearcase/clearcaseplugin.cpp
+++ b/src/plugins/clearcase/clearcaseplugin.cpp
@@ -1315,7 +1315,7 @@ void ClearCasePluginPrivate::diffActivity()
     }
 
     if ((m_settings.diffType == GraphicalDiff) && (filever.count() == 1)) {
-        QStringPair pair(filever.values().at(0));
+        QStringPair pair(filever.first());
         diffGraphical(pair.first, pair.second);
         return;
     }
diff --git a/src/plugins/coreplugin/actionmanager/command.cpp b/src/plugins/coreplugin/actionmanager/command.cpp
index c7eab9442fd..d41637eaba9 100644
--- a/src/plugins/coreplugin/actionmanager/command.cpp
+++ b/src/plugins/coreplugin/actionmanager/command.cpp
@@ -430,7 +430,8 @@ bool Action::isEmpty() const
 
 bool Action::isScriptable() const
 {
-    return m_scriptableMap.values().contains(true);
+    return std::find(m_scriptableMap.cbegin(), m_scriptableMap.cend(), true) !=
+            m_scriptableMap.cend();
 }
 
 bool Action::isScriptable(const Context &context) const
diff --git a/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp b/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
index 8738d3d7476..1b997b2797e 100644
--- a/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
+++ b/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
@@ -83,7 +83,9 @@ QVariant CtfStatisticsModel::data(const QModelIndex &index, int role) const
     if (!index.isValid())
         return QVariant();
 
-    QString title = m_data.keys().at(index.row());
+    auto it = m_data.cbegin();
+    std::advance(it, index.row());
+    const QString &title = it.key();
 
     switch (role) {
     case Qt::TextAlignmentRole:
diff --git a/src/plugins/ctfvisualizer/ctftracemanager.cpp b/src/plugins/ctfvisualizer/ctftracemanager.cpp
index ba0976dbec5..651e6c6f8e3 100644
--- a/src/plugins/ctfvisualizer/ctftracemanager.cpp
+++ b/src/plugins/ctfvisualizer/ctftracemanager.cpp
@@ -176,8 +176,9 @@ void CtfTraceManager::load(const QString &filename)
 void CtfTraceManager::finalize()
 {
     bool userConsentToIgnoreDeepTraces = false;
-    for (qint64 tid: m_threadModels.keys()) {
-        if (m_threadModels[tid]->m_maxStackSize > 512) {
+    auto it = m_threadModels.begin();
+    while (it != m_threadModels.end()) {
+        if (it.value()->m_maxStackSize > 512) {
             if (!userConsentToIgnoreDeepTraces) {
                 QMessageBox::StandardButton answer
                     = QMessageBox::question(Core::ICore::dialogParent(),
@@ -192,8 +193,10 @@ void CtfTraceManager::finalize()
                     break;
                 }
             }
-            m_threadModels.remove(tid);
-            m_threadRestrictions.remove(tid);
+            m_threadRestrictions.remove(it.key());
+            it = m_threadModels.erase(it);
+        } else {
+            ++it;
         }
     }
     for (CtfTimelineModel *model: m_threadModels) {
diff --git a/src/plugins/debugger/debuggermainwindow.cpp b/src/plugins/debugger/debuggermainwindow.cpp
index 9ccef503e71..5d066ba3f4e 100644
--- a/src/plugins/debugger/debuggermainwindow.cpp
+++ b/src/plugins/debugger/debuggermainwindow.cpp
@@ -500,8 +500,10 @@ void DebuggerMainWindow::savePersistentSettings() const
 
     QVariantHash states;
     qCDebug(perspectivesLog) << "PERSPECTIVE TYPES: " << d->m_lastTypePerspectiveStates.keys();
-    for (const QString &type : d->m_lastTypePerspectiveStates.keys()) {
-        const PerspectiveState state = d->m_lastTypePerspectiveStates.value(type);
+    for (auto it = d->m_lastTypePerspectiveStates.cbegin();
+         it != d->m_lastTypePerspectiveStates.cend(); ++it) {
+        const QString &type = it.key();
+        const PerspectiveState &state = it.value();
         qCDebug(perspectivesLog) << "PERSPECTIVE TYPE " << type
                                  << " HAS STATE: " << !state.mainWindowState.isEmpty();
         QTC_ASSERT(!state.mainWindowState.isEmpty(), continue);
diff --git a/src/plugins/languageclient/client.cpp b/src/plugins/languageclient/client.cpp
index 779af127a05..a4af7c37b93 100644
--- a/src/plugins/languageclient/client.cpp
+++ b/src/plugins/languageclient/client.cpp
@@ -111,22 +111,24 @@ Client::~Client()
     using namespace TextEditor;
     // FIXME: instead of replacing the completion provider in the text document store the
     // completion provider as a prioritised list in the text document
-    for (TextDocument *document : m_resetAssistProvider.keys())
-        resetAssistProviders(document);
-    for (Core::IEditor * editor : Core::DocumentModel::editorsForOpenedDocuments()) {
+    for (auto it = m_resetAssistProvider.cbegin(); it != m_resetAssistProvider.cend(); ++it)
+        resetAssistProviders(it.key());
+    const QList<Core::IEditor *> &editors = Core::DocumentModel::editorsForOpenedDocuments();
+    for (Core::IEditor *editor : editors) {
         if (auto textEditor = qobject_cast<BaseTextEditor *>(editor)) {
             TextEditorWidget *widget = textEditor->editorWidget();
             widget->setRefactorMarkers(RefactorMarker::filterOutType(widget->refactorMarkers(), id()));
             widget->removeHoverHandler(&m_hoverHandler);
         }
     }
-    for (const DocumentUri &uri : m_highlights.keys()) {
+    for (auto it = m_highlights.cbegin(); it != m_highlights.cend(); ++it) {
+        const DocumentUri &uri = it.key();
         if (TextDocument *doc = TextDocument::textDocumentForFilePath(uri.toFilePath())) {
             if (TextEditor::SyntaxHighlighter *highlighter = doc->syntaxHighlighter())
                 highlighter->clearAllExtraFormats();
         }
     }
-    for (IAssistProcessor *processor : m_runningAssistProcessors)
+    for (IAssistProcessor *processor : qAsConst(m_runningAssistProcessors))
         processor->setAsyncProposalAvailable(nullptr);
     updateEditorToolBar(m_openedDocument.keys());
 }
@@ -910,11 +912,11 @@ bool Client::reset()
     m_serverCapabilities = ServerCapabilities();
     m_dynamicCapabilities.reset();
     m_diagnosticManager.clearDiagnostics();
-    for (TextEditor::TextDocument *document : m_openedDocument.keys())
-        document->disconnect(this);
-    for (TextEditor::TextDocument *document : m_resetAssistProvider.keys())
-        resetAssistProviders(document);
-    for (TextEditor::IAssistProcessor *processor : m_runningAssistProcessors)
+    for (auto it = m_openedDocument.cbegin(); it != m_openedDocument.cend(); ++it)
+        it.key()->disconnect(this);
+    for (auto it = m_resetAssistProvider.cbegin(); it != m_resetAssistProvider.cend(); ++it)
+        resetAssistProviders(it.key());
+    for (TextEditor::IAssistProcessor *processor : qAsConst(m_runningAssistProcessors))
         processor->setAsyncProposalAvailable(nullptr);
     m_runningAssistProcessors.clear();
     return true;
@@ -1279,8 +1281,8 @@ void Client::initializeCallback(const InitializeRequest::Response &initResponse)
         TextEditor::IOutlineWidgetFactory::updateOutline();
     }
 
-    for (TextEditor::TextDocument *document : m_openedDocument.keys())
-        openDocument(document);
+    for (auto it = m_openedDocument.cbegin(); it != m_openedDocument.cend(); ++it)
+        openDocument(it.key());
 
     emit initialized(m_serverCapabilities);
 }
diff --git a/src/plugins/languageclient/diagnosticmanager.cpp b/src/plugins/languageclient/diagnosticmanager.cpp
index 802ff4a58fd..233353a9f71 100644
--- a/src/plugins/languageclient/diagnosticmanager.cpp
+++ b/src/plugins/languageclient/diagnosticmanager.cpp
@@ -130,8 +130,8 @@ void DiagnosticManager::showDiagnostics(const DocumentUri &uri)
 
 void DiagnosticManager::clearDiagnostics()
 {
-    for (const DocumentUri &uri : m_diagnostics.keys())
-        removeDiagnostics(uri);
+    for (auto it = m_diagnostics.cbegin(); it != m_diagnostics.cend(); ++it)
+        removeDiagnostics(it.key());
 }
 
 QList<Diagnostic> DiagnosticManager::diagnosticsAt(const DocumentUri &uri, const Range &range) const
diff --git a/src/plugins/languageclient/languageclientmanager.cpp b/src/plugins/languageclient/languageclientmanager.cpp
index 85f323916dc..362255d74ea 100644
--- a/src/plugins/languageclient/languageclientmanager.cpp
+++ b/src/plugins/languageclient/languageclientmanager.cpp
@@ -299,8 +299,10 @@ QVector<Client *> LanguageClientManager::clientForSetting(const BaseSettings *se
 const BaseSettings *LanguageClientManager::settingForClient(Client *client)
 {
     QTC_ASSERT(managerInstance, return nullptr);
-    for (const QString &id : managerInstance->m_clientsForSetting.keys()) {
-        for (const Client *settingClient : managerInstance->m_clientsForSetting[id]) {
+    for (auto it = managerInstance->m_clientsForSetting.cbegin();
+         it != managerInstance->m_clientsForSetting.cend(); ++it) {
+        const QString &id = it.key();
+        for (const Client *settingClient : it.value()) {
             if (settingClient == client) {
                 return Utils::findOrDefault(managerInstance->m_currentSettings,
                                             [id](BaseSettings *setting) {
@@ -386,13 +388,13 @@ void LanguageClientManager::clientFinished(Client *client)
         client->log(tr("Unexpectedly finished. Restarting in %1 seconds.").arg(restartTimeoutS),
                     Core::MessageManager::Flash);
         QTimer::singleShot(restartTimeoutS * 1000, client, [client]() { startClient(client); });
-        for (TextEditor::TextDocument *document : m_clientForDocument.keys(client))
-            client->deactivateDocument(document);
+        for (auto it = m_clientForDocument.cbegin(); it != m_clientForDocument.cend(); ++it)
+            client->deactivateDocument(it.key());
     } else {
         if (unexpectedFinish && !m_shuttingDown)
             client->log(tr("Unexpectedly finished."), Core::MessageManager::Flash);
-        for (TextEditor::TextDocument *document : m_clientForDocument.keys(client))
-            m_clientForDocument.remove(document);
+        for (auto it = m_clientForDocument.cbegin(); it != m_clientForDocument.cend(); ++it)
+            m_clientForDocument.remove(it.key());
         deleteClient(client);
         if (m_shuttingDown && m_clients.isEmpty())
             emit shutdownFinished();
diff --git a/src/plugins/languageclient/languageclientutils.cpp b/src/plugins/languageclient/languageclientutils.cpp
index 4b10ccdd546..5b6dd647683 100644
--- a/src/plugins/languageclient/languageclientutils.cpp
+++ b/src/plugins/languageclient/languageclientutils.cpp
@@ -122,8 +122,8 @@ bool applyWorkspaceEdit(const WorkspaceEdit &edit)
             result |= applyTextDocumentEdit(documentChange);
     } else {
         const WorkspaceEdit::Changes &changes = edit.changes().value_or(WorkspaceEdit::Changes());
-        for (const DocumentUri &file : changes.keys())
-            result |= applyTextEdits(file, changes.value(file));
+        for (auto it = changes.cbegin(); it != changes.cend(); ++it)
+            result |= applyTextEdits(it.key(), it.value());
         return result;
     }
     return result;
diff --git a/src/plugins/marketplace/productlistmodel.cpp b/src/plugins/marketplace/productlistmodel.cpp
index 115a86dfda6..ca1818ee99d 100644
--- a/src/plugins/marketplace/productlistmodel.cpp
+++ b/src/plugins/marketplace/productlistmodel.cpp
@@ -333,7 +333,7 @@ void SectionedProducts::setColumnCount(int columns)
     if (columns < 1)
         columns = 1;
     m_columnCount = columns;
-    for (ProductGridView *view : m_gridViews.values()) {
+    for (ProductGridView *view : qAsConst(m_gridViews)) {
         view->setColumnCount(columns);
         view->setFixedSize(view->viewportSizeHint());
     }
@@ -361,7 +361,7 @@ void SectionedProducts::fetchNextImage()
 
     if (QPixmapCache::find(nextUrl, nullptr)) {
         // this image is already cached it might have been added while downloading
-        for (ProductListModel *model : m_productModels.values())
+        for (ProductListModel *model : qAsConst(m_productModels))
             model->updateModelIndexesForUrl(nextUrl);
         fetchNextImage();
         return;
@@ -387,7 +387,7 @@ void SectionedProducts::onImageDownloadFinished(QNetworkReply *reply)
             const QString url = imageUrl.toString();
             QPixmapCache::insert(url, pixmap.scaled(ProductListModel::defaultImageSize,
                                                     Qt::KeepAspectRatio, Qt::SmoothTransformation));
-            for (ProductListModel *model : m_productModels.values())
+            for (ProductListModel *model : qAsConst(m_productModels))
                 model->updateModelIndexesForUrl(url);
         }
     } // handle error not needed - it's okay'ish to have no images as long as the rest works
@@ -411,7 +411,7 @@ void SectionedProducts::addNewSection(const Section &section, const QList<Core::
     gridModel->setColumnCount(m_columnCount);
 
     m_productModels.insert(section, productModel);
-    m_gridViews.insert(section, gridView);
+    const auto it = m_gridViews.insert(section, gridView);
 
     QFont f = font();
     f.setPixelSize(16);
@@ -421,7 +421,7 @@ void SectionedProducts::addNewSection(const Section &section, const QList<Core::
     auto vbox = qobject_cast<QVBoxLayout *>(scrollArea->widget()->layout());
 
     // insert new section depending on its priority, but before the last (stretch) item
-    int position = m_gridViews.keys().indexOf(section) * 2; // a section has a label and a grid
+    int position = std::distance(m_gridViews.begin(), it) * 2; // a section has a label and a grid
     QTC_ASSERT(position <= vbox->count() - 1, position = vbox->count() - 1);
     vbox->insertWidget(position, sectionLabel);
     vbox->insertWidget(position + 1, gridView);
@@ -442,7 +442,7 @@ void SectionedProducts::onTagClicked(const QString &tag)
 QList<Core::ListItem *> SectionedProducts::items()
 {
     QList<Core::ListItem *> result;
-    for (const ProductListModel *model : m_productModels.values())
+    for (const ProductListModel *model : qAsConst(m_productModels))
         result.append(model->items());
     return result;
 }
diff --git a/src/plugins/mcusupport/mcusupportsdk.cpp b/src/plugins/mcusupport/mcusupportsdk.cpp
index d871ca6a8fc..580ee74f834 100644
--- a/src/plugins/mcusupport/mcusupportsdk.cpp
+++ b/src/plugins/mcusupport/mcusupportsdk.cpp
@@ -348,8 +348,10 @@ struct McuTargetFactory
     QVector<McuPackage *> getMcuPackages() const
     {
         QVector<McuPackage *> packages;
-        packages.append(boardSdkPkgs.values().toVector());
-        packages.append(freeRTOSPkgs.values().toVector());
+        for (auto *package : qAsConst(boardSdkPkgs))
+            packages.append(package);
+        for (auto *package : qAsConst(freeRTOSPkgs))
+            packages.append(package);
         return packages;
     }
 
@@ -506,7 +508,8 @@ static QVector<McuTarget *> targetsFromDescriptions(const QList<McuTargetDescrip
 
     packages->append(Utils::transform<QVector<McuPackage *> >(
                          tcPkgs.values(), [&](McuToolChainPackage *tcPkg) { return tcPkg; }));
-    packages->append(vendorPkgs.values().toVector());
+    for (auto *package : vendorPkgs)
+        packages->append(package);
     packages->append(targetFactory.getMcuPackages());
 
     return  mcuTargets;
diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index 8babc8f6d8d..3552d8d471a 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -1961,7 +1961,8 @@ void ProjectExplorerPlugin::extensionsInitialized()
     });
 
     dd->m_documentFactory.addMimeType(QStringLiteral("inode/directory"));
-    for (const QString &mimeType : dd->m_projectCreators.keys()) {
+    for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+        const QString &mimeType = it.key();
         dd->m_documentFactory.addMimeType(mimeType);
         Utils::MimeType mime = Utils::mimeTypeForName(mimeType);
         allGlobPatterns.append(mime.globPatterns());
@@ -2345,8 +2346,8 @@ void ProjectExplorerPluginPrivate::determineSessionToRestoreAtStartup()
 QStringList ProjectExplorerPlugin::projectFileGlobs()
 {
     QStringList result;
-    for (const QString &mt : dd->m_projectCreators.keys()) {
-        Utils::MimeType mimeType = Utils::mimeTypeForName(mt);
+    for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+        Utils::MimeType mimeType = Utils::mimeTypeForName(it.key());
         if (mimeType.isValid()) {
             const QStringList patterns = mimeType.globPatterns();
             if (!patterns.isEmpty())
@@ -3921,8 +3922,8 @@ const QList<CustomParserSettings> ProjectExplorerPlugin::customParsers()
 QStringList ProjectExplorerPlugin::projectFilePatterns()
 {
     QStringList patterns;
-    for (const QString &mime : dd->m_projectCreators.keys()) {
-        Utils::MimeType mt = Utils::mimeTypeForName(mime);
+    for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+        Utils::MimeType mt = Utils::mimeTypeForName(it.key());
         if (mt.isValid())
             patterns.append(mt.globPatterns());
     }
@@ -3932,8 +3933,8 @@ QStringList ProjectExplorerPlugin::projectFilePatterns()
 bool ProjectExplorerPlugin::isProjectFile(const Utils::FilePath &filePath)
 {
     Utils::MimeType mt = Utils::mimeTypeForFile(filePath.toString());
-    for (const QString &mime : dd->m_projectCreators.keys()) {
-        if (mt.inherits(mime))
+    for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+        if (mt.inherits(it.key()))
             return true;
     }
     return false;
@@ -4005,9 +4006,9 @@ void ProjectManager::registerProjectCreator(const QString &mimeType,
 Project *ProjectManager::openProject(const Utils::MimeType &mt, const Utils::FilePath &fileName)
 {
     if (mt.isValid()) {
-        for (const QString &mimeType : dd->m_projectCreators.keys()) {
-            if (mt.matchesName(mimeType))
-                return dd->m_projectCreators[mimeType](fileName);
+        for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+            if (mt.matchesName(it.key()))
+                return it.value()(fileName);
         }
     }
     return nullptr;
@@ -4016,8 +4017,8 @@ Project *ProjectManager::openProject(const Utils::MimeType &mt, const Utils::Fil
 bool ProjectManager::canOpenProjectForMimeType(const Utils::MimeType &mt)
 {
     if (mt.isValid()) {
-        for (const QString &mimeType : dd->m_projectCreators.keys()) {
-            if (mt.matchesName(mimeType))
+        for (auto it = dd->m_projectCreators.cbegin(); it != dd->m_projectCreators.cend(); ++it) {
+            if (mt.matchesName(it.key()))
                 return true;
         }
     }
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.cpp b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.cpp
index 9a23b78f790..1b0bc97ade0 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.cpp
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.cpp
@@ -620,10 +620,13 @@ QString PropertyEditorQmlBackend::templateGeneration(const NodeMetaInfo &type,
 
     // Filter out the properties which have a basic type e.g. int, string, bool
     QList<PropertyName> basicProperties;
-    for (auto k : propertyMap.keys()) {
-        if (propertyMap.value(k).empty()) {
-            basicProperties.append(k);
-            propertyMap.remove(k);
+    auto it = propertyMap.begin();
+    while (it != propertyMap.end()) {
+        if (it.value().empty()) {
+            basicProperties.append(it.key());
+            it = propertyMap.erase(it);
+        } else {
+            ++it;
         }
     }
 
@@ -700,20 +703,22 @@ QString PropertyEditorQmlBackend::templateGeneration(const NodeMetaInfo &type,
     // Second the section containing properties of complex type for which no specific template exists e.g. Button
     if (!propertyMap.empty()) {
         emptyTemplate = false;
-        for (const auto &k : propertyMap.keys()) {
-            TypeName parentTypeName = type.propertyTypeName(k);
+        for (auto it = propertyMap.cbegin(); it != propertyMap.cend(); ++it) {
+            const auto &key = it.key();
+            TypeName parentTypeName = type.propertyTypeName(key);
             // alias resolution only possible with instance
             if (parentTypeName == "alias" && node.isValid())
-                parentTypeName = node.instanceType(k);
+                parentTypeName = node.instanceType(key);
 
             qmlTemplate += "Section {\n";
-            qmlTemplate += QStringLiteral("caption: \"%1 - %2\"\n").arg(QString::fromUtf8(k)).arg(QString::fromUtf8(parentTypeName));
+            qmlTemplate += QStringLiteral("caption: \"%1 - %2\"\n")
+                    .arg(QString::fromUtf8(key), QString::fromUtf8(parentTypeName));
             qmlTemplate += anchorLeftRight;
             qmlTemplate += "expanded: false\n";
             qmlTemplate += "level: 1\n";
             qmlTemplate += "SectionLayout {\n";
 
-            auto properties = propertyMap.value(k);
+            auto properties = it.value();
             Utils::sort(properties);
 
             for (const auto &p : qAsConst(properties)) {
diff --git a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorview.cpp b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorview.cpp
index 277a743dc6b..ca4bfef9d62 100644
--- a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorview.cpp
+++ b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorview.cpp
@@ -262,12 +262,12 @@ ModelNode TransitionEditorView::addNewTransition()
                 transition.validId();
                 root.nodeListProperty("transitions").reparentHere(transition);
 
-                for (const QString &id : idPropertyList.keys()) {
+                for (auto it = idPropertyList.cbegin(); it != idPropertyList.cend(); ++it) {
                     ModelNode parallelAnimation = createModelNode("QtQuick.ParallelAnimation",
                                                                   2,
                                                                   12);
                     transition.defaultNodeAbstractProperty().reparentHere(parallelAnimation);
-                    for (const QString &property : idPropertyList.value(id)) {
+                    for (const QString &property : it.value()) {
                         ModelNode sequentialAnimation
                             = createModelNode("QtQuick.SequentialAnimation", 2, 12);
                         parallelAnimation.defaultNodeAbstractProperty().reparentHere(
@@ -285,7 +285,7 @@ ModelNode TransitionEditorView::addNewTransition()
                                                                       12,
                                                                       {{"property", property},
                                                                        {"duration", 150}});
-                        propertyAnimation.bindingProperty("target").setExpression(id);
+                        propertyAnimation.bindingProperty("target").setExpression(it.key());
                         sequentialAnimation.defaultNodeAbstractProperty().reparentHere(
                             propertyAnimation);
                     }
diff --git a/src/plugins/qmldesigner/designercore/model/modelmerger.cpp b/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
index 7d47d478312..4cd6e6d50d5 100644
--- a/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
@@ -111,7 +111,8 @@ static void setupIdRenamingHash(const ModelNode &modelNode, QHash<QString, QStri
             int number = 1;
             splitIdInBaseNameAndNumber(newId, &baseId, &number);
 
-            while (view->hasId(newId) || idRenamingHash.values().contains(newId)) {
+            while (view->hasId(newId) || std::find(idRenamingHash.cbegin(),
+                        idRenamingHash.cend(), newId) != idRenamingHash.cend()) {
                 newId = baseId + QString::number(number);
                 number++;
             }
diff --git a/src/plugins/qmldesigner/designercore/model/rewriterview.cpp b/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
index 44726c23e00..83d55ee097d 100644
--- a/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
+++ b/src/plugins/qmldesigner/designercore/model/rewriterview.cpp
@@ -979,7 +979,7 @@ QList<QmlTypeData> RewriterView::getQMLTypes() const
     qmlDataList.append(m_textToModelMerger->getQMLSingletons());
 
     for (const QmlJS::ModelManagerInterface::CppData &cppData :
-         QmlJS::ModelManagerInterface::instance()->cppData().values())
+         QmlJS::ModelManagerInterface::instance()->cppData())
         for (const LanguageUtils::FakeMetaObject::ConstPtr &fakeMetaObject : cppData.exportedTypes) {
             for (const LanguageUtils::FakeMetaObject::Export &exportItem :
                  fakeMetaObject->exports()) {
diff --git a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
index 38e61469159..e12912811f8 100644
--- a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
@@ -155,14 +155,16 @@ void StylesheetMerger::syncId(ModelNode &outputNode, ModelNode &inputNode)
 
 void StylesheetMerger::setupIdRenamingHash()
 {
-    for (const ModelNode &node : m_templateView->rootModelNode().allSubModelNodesAndThisNode()) {
+    const QList<ModelNode> &nodes = m_templateView->rootModelNode().allSubModelNodesAndThisNode();
+    for (const ModelNode &node : nodes) {
         if (!node.id().isEmpty()) {
             QString newId = node.id();
             QString baseId;
             int number = 1;
             splitIdInBaseNameAndNumber(newId, &baseId, &number);
 
-            while (m_templateView->hasId(newId) || m_idReplacementHash.values().contains(newId)) {
+            while (m_templateView->hasId(newId) || std::find(m_idReplacementHash.cbegin(),
+                        m_idReplacementHash.cend(), newId) != m_idReplacementHash.cend()) {
                 newId = "stylesheet_auto_merge_" + baseId + QString::number(number);
                 number++;
             }
diff --git a/src/plugins/scxmleditor/common/colorsettings.cpp b/src/plugins/scxmleditor/common/colorsettings.cpp
index 34f5acd7cff..49bbb395efc 100644
--- a/src/plugins/scxmleditor/common/colorsettings.cpp
+++ b/src/plugins/scxmleditor/common/colorsettings.cpp
@@ -50,9 +50,8 @@ ColorSettings::ColorSettings(QWidget *parent)
     m_colorThemes = s->value(Constants::C_SETTINGS_COLORSETTINGS_COLORTHEMES).toMap();
 
     m_ui.m_comboColorThemes->clear();
-    for (const auto &key : m_colorThemes.keys())
-        m_ui.m_comboColorThemes->addItem(key);
-
+    for (auto it = m_colorThemes.cbegin(); it != m_colorThemes.cend(); ++it)
+        m_ui.m_comboColorThemes->addItem(it.key());
     m_ui.m_comboColorThemes->setCurrentText(s->value(Constants::C_SETTINGS_COLORSETTINGS_CURRENTCOLORTHEME).toString());
 }
 
@@ -74,9 +73,9 @@ void ColorSettings::selectTheme(int index)
     m_ui.m_colorThemeView->reset();
     if (!name.isEmpty() && m_colorThemes.contains(name)) {
         m_ui.m_colorThemeView->setEnabled(true);
-        QVariantMap colordata = m_colorThemes[name].toMap();
-        for (const auto &index : colordata.keys())
-            m_ui.m_colorThemeView->setColor(index.toInt(), QColor(colordata[index].toString()));
+        const QVariantMap colordata = m_colorThemes[name].toMap();
+        for (auto it = colordata.cbegin(); it != colordata.cend(); ++it)
+            m_ui.m_colorThemeView->setColor(it.key().toInt(), QColor(it.value().toString()));
     } else {
         m_ui.m_colorThemeView->setEnabled(false);
     }
@@ -86,7 +85,7 @@ void ColorSettings::createTheme()
 {
     QString name = QInputDialog::getText(this, tr("Create New Color Theme"), tr("Theme ID"));
     if (!name.isEmpty()) {
-        if (m_colorThemes.keys().contains(name)) {
+        if (m_colorThemes.contains(name)) {
             QMessageBox::warning(this, tr("Cannot Create Theme"), tr("Theme %1 is already available.").arg(name));
         } else {
             m_ui.m_colorThemeView->reset();
diff --git a/src/plugins/scxmleditor/plugin_interface/scxmltag.cpp b/src/plugins/scxmleditor/plugin_interface/scxmltag.cpp
index 924f5127293..65c0e689ff6 100644
--- a/src/plugins/scxmleditor/plugin_interface/scxmltag.cpp
+++ b/src/plugins/scxmleditor/plugin_interface/scxmltag.cpp
@@ -358,7 +358,7 @@ QString ScxmlTag::editorInfo(const QString &key) const
 
 bool ScxmlTag::hasEditorInfo(const QString &key) const
 {
-    return m_editorInfo.keys().contains(key);
+    return m_editorInfo.contains(key);
 }
 
 void ScxmlTag::setAttributeName(int ind, const QString &name)