[Interest] What don't you like about Qt?

[André Somers]

Op 20/09/2016 om 22:09 schreef Alejandro Exojo:
> On Monday 19 September 2016 18:35:43 Etienne Sandré-Chardonnal wrote:
>> Yes, but for instance you can't move-pass an object between signals and
>> slots across a queued connection, unless I'm wrong. You have to make your
>> object implicitely shared. This causes lots of copies when passing a
>> std::vector, for instance.
> The Qt style on designing signals, is to use those for indicating that
> something happened, but not passing the something in the signal. For example,
> you get a signal that new data is available (e.g. a datagram), but you don't
> get the datagram passed as signal argument.
You don't? Well, you can certainly get a pointer to it (which is cheap, 
of course)...
See QNetworkAccessManager::finished(QNetworkReply *reply); [signal]

I would say that it is quite normal to signal the finishing of some 
operation _and_ directly pass along the results of that operation. If 
that is a std::vector, then indeed it would result in copying (so I'd go 
looking for a different design there, perhaps use a QVector instead).

André