Qt signal is ten times slower than a virtual function

Qt signal is ten times slower than a virtual function signal and slot in qt Due to the weak couplings of the Qt signals and slot mechanisms, it is viable to bind signals to each other It may sound confusing, so let me draw a signal and slot in qt Example code for singnals and slots writen in c++ using Qt framework - ExecomNordcpp-qt-signal-slot-example

signal and slot arguments are not compatible Also in QML there is still the ability to connect a signal to a signal, as in QtC++ Look at the following artificial example In this case,