Hi,

I created a small application to test rust with slint Multimeter Control and I have some architecture design questions.
I have a mainwindow which is able to show multiple multimeter controls at the same time. They can be added dynamically by clicking a button. Once I click the button I will pick up the model and add new multimeter data

let app = app_weak.unwrap();
let model = app.get_dmm_data();
let model = model.as_any().downcast_ref::<VecModel<DmmData>>().unwrap();
model.push(DmmData { id, ip, connected: true, result: 0.0, terminal: Terminal::Front, mode: Mode::VoltageDc});

(https://gitlab.com/Murmele/multimetercontrol/-/blob/main/src/lib.rs?ref_type=heads#L30-L32)

dmm_data is an array in the AppWindow: in property <[DmmData]> dmm_data: [];

struct DmmData {
    ip: string,
}

When the model changes, in slint new objects get created. That means that all previous Dmm objects get deleted and all are recreated?

https://gitlab.com/Murmele/multimetercontrol/-/blob/main/ui/dmm-control.slint?ref_type=heads#L32-L43
AppWindow:

for dmm in dmm_data: Dmm {
	...
}

export component Dmm inherits Rectangle {
    in property <string> ip <=> ip-text.text;
	
	HorizontalLayout {
		ip-text:= Text {
			text: "<IP>";
		}
	}
}

Then I assign data to that Dmm object. So the ip is stored once in the model dmm_data and in the Dmm object and at least also in the ip-text object or am I wrong?
Is there a better way to handle the data so that there exist less number of copies?