tonytran questions

• convert the reference back to a strong one inside the closure, memory management, swift
• detect a touch down event on UIImageView(s)
• Order of items in set has been changed, Set, Swift
• protocol extension, does not conform to protocol
• func == from equatable protocol does not work for custom object, swift
• refresh data after entering a foreground
• Class-Only Protocols in Swift

tonytran answers