[Development] QList

[Konstantin Tokarev]

24.05.2017, 15:49, "NIkolai Marchenko" <enmarantispam at 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.macieira at 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
>>
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-- 
Regards,
Konstantin