Is self captured within a nested function

Question

With closures I usually append [weak self] onto my capture list and then do a null check on self:

func myInstanceMethod()
{
    let myClosure =
            


        

Answer 1

Does not seem to be the case anymore. This is valid in swift 4.1:

class Foo {
    var increment = 0
    func bar() {
        func method1() {
            DispatchQueue.main.async(execute: {
                method2()
            })
        }

        func method2() {
            otherMethod()
            increment += 1
        }
        method1()
    }

    func otherMethod() {

    }
}

The question remains: How is self captured ?