On 14/10/2024 20:46, Mathias Hasselmann via Development wrote:
The QtCS24 misses the single one big reason you want to switch C++20 now
and whenever possible: Concepts.
They indeed are a total game changer and I'd boldy predict that 80% of
all meta-programming helpers in Qt's headers could be re
On Monday 14 October 2024 11:46:17 GMT-7 Mathias Hasselmann via Development
wrote:
> The QtCS24 misses the single one big reason you want to switch C++20 now
> and whenever possible: Concepts.
Using them unconditionally means forcing users to C++20. We agreed we can't
have that right now.
Howev
6) when should we do this?
The last time we discussed C++20, it was made clear that we can only do such
changes on LTS+1 releases. That's 6.9.
The last time we discussed this was at QtCS24
(https://wiki.qt.io/QtCS2024_C%2B%2B20), where IIRC the conclusion was that
ATM, there is no reason to swit
On Monday 14 October 2024 09:53:56 GMT-7 Thiago Macieira wrote:
> > The last time we discussed this was at QtCS24
> > (https://wiki.qt.io/QtCS2024_C%2B%2B20), where IIRC the conclusion was
> > that
> > ATM, there is no reason to switch to C++20. So, it is definitely not in
> > 6.9.
>
> That was "n
Maintenance break is over.
From: CI Maintenance Break
Sent: maanantai 14. lokakuuta 2024 8.00
To: CI Maintenance Break ;
'development@qt-project.org'
Subject: RE: CI Maintenance Break
Maintenance break starts now.
From: CI Maintenance Break
Sent: tiistai 8. lokakuuta 2024 20.05
To: development
On 10/10/2024 18:57, Thiago Macieira wrote:
Re: https://codereview.qt-project.org/c/qt/qtbase/+/463425
TL;DR: for some std::format functionality, we really want to have out-of-line
implementations, which requires QtCore compiled with C++20. See
https://codereview.qt-project.org/c/qt/qtbase/+/595
On Monday 14 October 2024 06:13:49 GMT-7 Giuseppe D'Angelo via Development
wrote:
> Do you foresee any problems at actually guaranteeing that we still work
> with C++17, should one force the C++ version (via whatever means)?
> I mean, we have to keep work in C++17 anyhow (for some toolchains),
>
On 14/10/2024 16:56, Vladimir Minenko via Development wrote:
Effectively, I don't see much difference from the current situation,
where we "pretend" that we require C++17 but in reality we just check
that we can pass `-std=c++17` to the compiler. Any usage in Qt code of
individual language/li
On Monday 14 October 2024 07:56:35 GMT-7 Vladimir Minenko via Development
wrote:
> 6) when should we do this?
> The last time we discussed C++20, it was made clear that we can only do such
> changes on LTS+1 releases. That's 6.9.
>
> The last time we discussed this was at QtCS24
> (https://wiki.q
The QtCS24 misses the single one big reason you want to switch C++20 now
and whenever possible: Concepts.
They indeed are a total game changer and I'd boldy predict that 80% of
all meta-programming helpers in Qt's headers could be replaced by
concepts that are easier to understand, more expressi
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