On Thursday 21 January 2016 05:24:35 Kevin Kofler wrote: > Marc Mutz wrote: > > On Wednesday 20 January 2016 22:50:43 Kevin Kofler wrote: > >> All these are horrible and error-prone hacks that have obvious lifetime > >> issues. You are complaining about Qt containers because the detaching > >> can invalidate iterators. Well, the lifetime issues you introduce with > >> the above proposed solutions are much worse! And a caching mutable > >> member also destroys thread-safety (in addition to the obvious lifetime > >> issue that the next call surprisingly invalidates your existing > >> reference). > > > > One word: QModelIndex. > > And that class is the source of innumerable bugs. The fact that one Qt > class has such broken semantics is no excuse for putting them everywhere.
So how would you have designed it, then? Thanks, Marc -- Marc Mutz <marc.m...@kdab.com> | Senior Software Engineer KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company Tel: +49-30-521325470 KDAB - The Qt Experts _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
