Hi,
On 29-11-19 09:15, Ville Voutilainen wrote:
On Wed, 27 Nov 2019 at 17:52, Sérgio Martins via Development
<[email protected]> wrote:
Hi,
The Qt5 PMF connect syntax is wonderful and very elegant compared to Qt
4.
Unless, ofc, you have overloaded signals, which makes it painful to
write and read. Not even qOverload makes it look much better.
I suggest we rename such signals, as KDE is already doing for KF6 (maybe
leave the old signatures there, to reduce Qt6 SIC)
There's also a new clazy check 'overloaded-signal' to help finding them.
Relevant bug report: QTBUG-47225
I know there are downsides, but keeping things as they are is just
worse.
Signals and slots are the bread of butter of Qt. Syntax for overloading
signals is just too much of a barrier for new-comers, who currently
aren't
even able to connect a QComboBox without much hassle.
Seems like a splendid idea to me, showing even advanced programmers
that they need
to take an address of a member function with a cast seems to baffle
them. Any thoughts
on overloaded slots, or overloaded member functions as slot-targets?
The latter are a tad
harder to diagnose.
They are much easier to solve though. I usually just use a trivial
lambda for these cases.
I'd suggest to start with just adding specific specialized signals next
to the overloaded ones. Doing that is binary compatible, so it can be
done in 5.15 already. The overloaded signal can then be marked as
deprecated. I'm not sure they should be removed completely for 6, but if
there is a specialized alternative it would already take away the pain
of the connect statement.
André
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