https://forum.qt.io/topic/69771/qmultimap-insertion
QMultiMap insertion | Qt Forum
Jul 29, 2016 - My application reads 5,000 files each containing 100 to 10,000 records into 5,000 QMultiMap by QDateTime. Many of the QDateTime keys are equal because the o...
insertionqtforum
https://doc.qt.io/qt-6/qmultimap-iterator-obsolete.html
Obsolete Members for QMultiMap::iterator | Qt Core | Qt 6.11.1
The QMultiMap::iterator class provides an STL-style non-const iterator for QMultiMap.
obsoletemembersiteratorqtcore