On Thu, Apr 26, 2012 at 10:51 PM, Andre Somers <an...@familiesomers.nl> wrote: > The copy is made at the moment you _append_ the list, not at the moment > you're modifying it.
actually, it's made at both points. operator[] (the non-const version) detaches (which causes a copy, if the container's data is shared). append also does this, as does anything else that modifies the container. that's why it's best to use at() if you don't explicitly need to modify the list. otherwise: QList<int> listone; listone << 5 << 6 << 7; QList<int> listtwo = listone; listtwo[0] = 10; // if this didn't detach before writing 10, listone would be modified, and you most certainly don't expect/want that _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
