Passing self into initializer as delegate within own initializer-CodePudding

might be a silly question, but I'm trying to understand better why I can't do this. I recall this working in Swift 5.6.1, but I recently updated to Swift 5.7.2.

Before asking, I want to note that I did see this question: Swift passing self as argument in class init, but it didn't quite answer my question. Or maybe I just want to see if these are the only solutions...

I have a couple of classes that's something like this.

class Bar {
    weak var delegate: FooDelegate?

    init(delegate: FooDelegate) {
        self.delegate = delegate
    }
}

class Foo: FooDelegate {
    var bar: Bar

    init() {
        self.bar = Bar(delegate: self)
    }
}

Before I updated, I don't remember this throwing any errors. Now I'm getting the error Variable 'self.bar' used before being initialized.

Is there a way to set this up so that I'm passing the delegate correctly?

Thanks all!

CodePudding user response：

You can solve this by breaking it up in two steps, create the Bar object and then set delegate

init() {
    bar = Bar()
    bar.delegate = self
}

Of course this requires a new init for the Bar class