Quote Originally Posted by wysota View Post
So return the modified list instead of changing the original one. You'll be making a copy either way.
But before I can return the modified list, I need to get the data from qml site
It would be great if the return data could be moved(rvalue reference, rvo) to the qml site

What would you try to do if there are a lot of data need to transfer between c++ and qml?

From the view of technical, is it possible to make c++ and qml support pass by reference?