Order of signals and slots

[Morea]

Hi again.
If I have this method in a class:

int MyClass::foo()
{
   emit MySignal();
   return 4;
}

int MyClass::foo()
{
   emit MySignal();
   return 4;
}

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can I always be sure that the signal is emitted, code in slots are being run, and finished, and then it will return the value 4? No chanse of returning 4 before all slots and signals have finished?