Error when using Generic as property type in Swift

Question

I\'m having an issue when using a Generic as the type constraint on a property. Here is a very simple example:

import UIKit

class TSSignal

        

Answer 1

This is NOT an "answer" (it is my own question), but I thought it worth noting what I did in this case to move passed this situation, for the time being.

import UIKit
class TSSignal {
    var message: AnyObject?
    init() {
    }
}

Lame, but I am sure it's only temporary.

Answer 2

There is a workaround without type erasure (works as of Xcode6-Beta2):

import UIKit

class TSSignal<MessageType> {
    var _message: [MessageType] = []

    func getMessage() -> MessageType? {
        if _message.count > 0 {
            return _message[0]
        } else {
            return nil
        }
    }

    func setMessage(maybeMessage: MessageType?) {
        if let message = maybeMessage {
            _message = [message]
        } else {
            _message = []
        }
    }

    init() {
    }
}

Answer 3

EDIT EDIT:

This is definitely a bug in the compiler.

I tried to 'outsmart' the compiler by using the following:

class TSSignal<TMessage>
{
    var messageType : Optional<TMessage> = nil

    init() { }
}

Same issue.