I was talking about the solution that assumes making a QArrayList type and deprecating QList entirely, not the one that aliases QList to QVector which I, personally, don't like, since it will produce a lot of the code perception problems and incorrect perfomance assumptions. Not to mention people will still widely use QList as it's "easier to type "(don't laugh) and "looks like a default container by simplicity of its name" (again, don't laugh, I am just outlining potential problems with new users)
On Wed, May 24, 2017 at 4:12 PM, Konstantin Tokarev <annu...@yandex.ru> wrote: > > > 24.05.2017, 15:49, "NIkolai Marchenko" <enmarantis...@gmail.com>: > > A semi-sane idea that I think no one has suggested yet: > > > > What if, starting from Qt6, QList becomes a wrapper for QArrayList with > a contructor from this type? > > After all making existing code slightly _slower_ because of the wrapping > overhead is way less problematic than breaking it outright. > > It will nudge the users of QLists that need to be fast to switch but > will leave users of "default no brainer container" happy as they likely > wouldn't even notice. > > If existing Qt APIs switch from QList to QVector in Qt 6, such change will > make it hard to support both Qt 5 and Qt 6 in the same code base. > > > > > On Tue, May 23, 2017 at 5:27 PM, Thiago Macieira < > thiago.macie...@intel.com> wrote: > >> On Tuesday, 23 May 2017 04:56:52 PDT Olivier Goffart wrote: > >>> In my opinion for Qt6, we should make prepend, takeFirst amortized > O(1) in > >>> QVector. > >> > >> That is not very difficult once we move the begin pointer out of the d > pointer > >> and into the main QVector class. We need to add an interface to > QArrayData to > >> shrink and expand the buffer without relocating it. With that, we > practically > >> hide the allocated capacity information from QVector too. > >> > >> -- > >> Thiago Macieira - thiago.macieira (AT) intel.com > >> Software Architect - Intel Open Source Technology Center > >> > >> _______________________________________________ > >> Development mailing list > >> Development@qt-project.org > >> http://lists.qt-project.org/mailman/listinfo/development > > , > > > > _______________________________________________ > > Development mailing list > > Development@qt-project.org > > http://lists.qt-project.org/mailman/listinfo/development > > > -- > Regards, > Konstantin >
_______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
