I have a QMap consist of pointers to class objects, allocated using new
. I need to delete all these pointers. What is the proper way of doing this with QMap ? I can do it this way:
QList<ClassName*> allVals = map.values();
for (QList<ClassName*>::iterator it = allVals.begin(), endIt = allVals.end(); it != endIt; ++it) {
delete *it;
}
But is there a better way of doing the same ?
The best way to do this is to use qDeleteAll(...):
qDeleteAll( map ); // deletes all the values stored in "map"
map.clear(); // removes all items from the map
qDeleteAll(...)
can be used on all of Qt's containers. This way you don't need to worry about a loop nor worry about deleting items individually.