[Interest] Are slots even needed these days?

[Nikos Chantziaras]

On 16/03/16 16:24, Nikos Chantziaras wrote:
> Since in modern Qt you connect signals to functions/lambdas, is there a
> reason to declare slots anymore?  [...]

Good replies here. So, to sum it up, it seems that slot/signal 
declarations and old-style connect() syntax will continue to have a 
place in Qt due to:

  * QML signals/slots.
  * QObject runtime reflection (invokeMethod() as the most common use.)
  * Easy dynamic connections (signal/slot names unknown at compile time.)
  * Qt Designer automatic signal/slot connection generation.
  * Easy overload resolution (but Qt 5.7 fixes that with qOverload().)

There's also code documenting issues, but these are subjective.

So I'll be keeping the signal/slot declarations. I was considering to 
remove them for the next major version of one of my projects, but it 
would be rather unfortunate to then have to re-introduce some of them 
later on because I want to use QML or might need reflection capabilities.

So using PMF syntax but keeping the signal/slot declarations seems like 
the way to go for me.

Thanks everyone for the helpful feedback! :-)