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>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp
index 2642e5dad5..c1533dd459 100644
--- a/src/corelib/mimetypes/qmimeprovider.cpp
+++ b/src/corelib/mimetypes/qmimeprovider.cpp
@@ -449,10 +449,10 @@ void QMimeBinaryProvider::addAllMimeTypes(QList<QMimeType> &result)
     loadMimeTypeList();
     if (result.isEmpty()) {
         result.reserve(m_mimetypeNames.size());
-        for (const QString &name : qAsConst(m_mimetypeNames))
+        for (const QString &name : std::as_const(m_mimetypeNames))
             result.append(mimeTypeForNameUnchecked(name));
     } else {
-        for (const QString &name : qAsConst(m_mimetypeNames))
+        for (const QString &name : std::as_const(m_mimetypeNames))
             if (std::find_if(result.constBegin(), result.constEnd(), [name](const QMimeType &mime) -> bool { return mime.name() == name; })
                     == result.constEnd())
                 result.append(mimeTypeForNameUnchecked(name));
@@ -680,7 +680,7 @@ void QMimeXMLProvider::findByMagic(const QByteArray &data, int *accuracyPtr, QMi
 {
     QString candidateName;
     bool foundOne = false;
-    for (const QMimeMagicRuleMatcher &matcher : qAsConst(m_magicMatchers)) {
+    for (const QMimeMagicRuleMatcher &matcher : std::as_const(m_magicMatchers)) {
         if (matcher.matches(data)) {
             const int priority = matcher.priority();
             if (priority > *accuracyPtr) {
@@ -716,7 +716,7 @@ void QMimeXMLProvider::ensureLoaded()
 
     //qDebug() << "Loading" << m_allFiles;
 
-    for (const QString &file : qAsConst(allFiles))
+    for (const QString &file : std::as_const(allFiles))
         load(file);
 }