Mida teate Swift'i pildil olevast pildilisti?

In Swift, the capture list is used in closures to manage the capturing of variables from the surrounding context, especially to prevent strong reference cycles (retain cycles).

The capture list is written in square brackets before the body of the closure and allows specifying how variables are captured — by strong (strong), weak (weak), or unowned (unowned) references.

Example:

class ViewController {
    var name = "Swift"
    lazy var closure: () -> Void = { [weak self] in
        guard let self = self else { return }
        print(self.name)
    }
}

Here, [weak self] prevents holding a strong reference to self inside the closure, which helps avoid memory leaks.

Therefore, the capture list is a tool for controlling the lifecycle of objects captured by the closure.