Why? In case of QMap, we have no need to use operator= to change the map. We simply detach and insert new data in it. Of course, in case of multiple changes, the map can reach some "invalid state" before changes are finished (i.e. in case we need transacted changes, we have to use mutex anyway). But it is not neccessary in some cases.
2016-01-22 12:48 GMT+03:00 Marc Mutz <[email protected]>: > On Friday 22 January 2016 01:31:20 Kevin Kofler wrote: > > Marc Mutz wrote: > > > Ivan was talking about thread-safe classes. You need to lock a mutex to > > > take the copy. > > > > Returning a QMap instead of a std::shared_ptr<std::map> would be > perfectly > > thread-safe there. > > Wrong. > > -- > Marc Mutz <[email protected]> | Senior Software Engineer > KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company > Tel: +49-30-521325470 > KDAB - The Qt Experts > _______________________________________________ > Development mailing list > [email protected] > http://lists.qt-project.org/mailman/listinfo/development >
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