Darren questions

Darren answers

• How should the model update the UI of its progress?
• Question about factory method object lifetimes in Objective-C/Cocoa (to retain or not...)
• Objective-C call class method on Class variable
• Universal App (iPad+iPhone) targeted to older (iOS < 4) devices - conditionally adopt a protocol?
• Could someone explain to me the reason for parentheses on types in Objective-C methods?
• Why is showing a UIAlertView in application:didFinishLaunchingWithOptions: causing an error?
• iPhone - UINavigationController, reuse views?
• iOS error casting Object in Swift which inherited from an Obj-C Class
• With Swift "why" do some delegate functions require override func
• Swift wants argument of #selector to be exposed to Objective-C