Add rvalue-ref qualified QString::to{Upper,Lower,CaseFolded}

This is even more common than the QByteArray equivalents.

                Qt                   Qt Creator
        const &         &&      const &         &&
toLower      71         50           45         26
toUpper      35          8           46         35

Change-Id: I8b797d2321b22ce414c23656c5f1709ac649c423
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/corelib/tools/qstring_compat.cpp b/src/corelib/tools/qstring_compat.cpp
index be74775c1a..b42f49d86d 100644
--- a/src/corelib/tools/qstring_compat.cpp
+++ b/src/corelib/tools/qstring_compat.cpp
@@ -50,6 +50,21 @@
 QT_BEGIN_NAMESPACE
 
 // all these implementations must be the same as the inline versions in qstring.h
+QString QString::toLower() const
+{
+    return toLower_helper(*this);
+}
+
+QString QString::toCaseFolded() const
+{
+    return toCaseFolded_helper(*this);
+}
+
+QString QString::toUpper() const
+{
+    return toUpper_helper(*this);
+}
+
 QByteArray QString::toLatin1() const
 {
     return toLatin1_helper(*this);