On quinta-feira, 19 de janeiro de 2017 16:18:30 PST Grégoire Barbier wrote:
> > The return value is interesting still.
>
> With lambdas the return value itself can be replaced with a captured
> reference, isn't it ?
> Anyway it's still convenient to have it when calling plain old methods
> rather than lambdas.
Hmm... right. What I had proposed:
QMetaObject::invokeMethod(object, [=]() {
doSomething(); return something; },
Qt::BlockingQueuedConnection,
Q_RETURN_ARG(foo));
Could be rewritten as:
QMetaObject::invokeMethod(object, [=, &foo]() {
doSomething(); foo = something; },
Qt::BlockingQueuedConnection);
And that allows us to drop the Q_RETURN_ARG ugliness. That's much better.
PS: should we invert the argument order and have the connection type appear
before the functor? I find it ugly to have a lambda in the middle of a
parameter list.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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