You closed your own question by marking it as correct answer (which visibly was not). Don't expect many more answers. But check the identifier you passed to instantiateViewController and what class you have defined in storyboard for this Setting VC (it should be SettingUI). And remember: you should not unwrap an optional (controllerTwo) if you are not absolutely sure it cannot be nil. But you should test with if let controllerTwo { …

I changed from main to a Dispatch in case it overpasses duration limit. Works quite OK. Thanks for all the help.

@darkpaw For stand alone watch app that may be great. But for companion apps where main app is UIKit, not so cool.

OK, I attached a complete file.

You're right, that's what I meant by : "scaleFactor is computed as linear progression from topScale to bottomScale depending on the line"

Thanks. I’ll try on other browsers.

Thanks. Of course, I was misreading the precedence operators (I was reading it as   (self.isOn = newValue) ? .myTrue : .myFalse . And once you start reading incorrectly, it's hard to change one's mind.

Yes, but my question was about the ternary pattern        condition    ?   :

Merci. Quelle est la View principale ? AfficherUneListe ?

@techboss_11123 WHere does this code fit ? What do you show here ? And you do not answer on what T is and if it's an array… So please explain more clearly.

@NinaGit You may find some information here as well: https://developer.apple.com/forums/thread/727471

What do you get in log when you print self.vLocal?

That's much clearer than my explanation. Would be great to have this in the challenge rules.

So the question is: who is self referring to ? Could you check ? Maybe it is to an instance that does not exist anymore. Could you try adding a capture of self ? UIAction(title: "Edit Value", image: UIImage(systemName: "square.and.pencil"), handler: { [self] (_) in

Could you show the complete code of the class ?