Anonymous class in swift

Question

Is there an equivalent syntax or technique for Anonymous class in Swift? Just for clarification Anonymous class in Java example here - http://docs.oracle.com/javase/tutorial

Answer 1

For example, Java listener/adapter pattern would be translated to Swift like this:

protocol EventListener {
    func handleEvent(event: Int) -> ()
}

class Adapter : EventListener {
    func handleEvent(event: Int) -> () {
    }
}

var instance: EventListener = {
    class NotSoAnonymous : Adapter {
        override func handleEvent(event: Int) {
            println("Event: \(event)")
        }
    }

    return NotSoAnonymous()
}()

instance.handleEvent(10)

(Crashing the compiler on Beta 2)

The problem is, you always have to specify a name. I don't think Apple will ever introduce anonymous classes (and structs etc.) because it would be pretty difficult to come with a syntax that doesn't collide with the trailing closures.

Also in programming anonymous things are bad. Naming things help readers to understand the code.