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if enabled {
            billingNameTextField.textColor = UIColor.blackColor()
            billingLasNameTextField.textColor = UIColor.blackColor()
            billingCompanyNameTextField.textColor = UIColor.blackColor()
            billingPhoneNumberTextField.textColor = UIColor.blackColor()
            billingAddressTextField.textColor = UIColor.blackColor()
            billingAddressTwoTextField.textColor = UIColor.blackColor()
            billingCityTextField.textColor = UIColor.blackColor()
            billingStateTextField.textColor = UIColor.blackColor()
            billingStateTextField.textColor = UIColor.blackColor()
            billingPostalCodeTextField.textColor = UIColor.blackColor()
            billingCountryTextField.textColor = UIColor.blackColor()
        } else {
            billingNameTextField.textColor = UIColor.lightGrayColor()
            billingLasNameTextField.textColor = UIColor.lightGrayColor()
            billingCompanyNameTextField.textColor = UIColor.lightGrayColor()
            billingPhoneNumberTextField.textColor = UIColor.lightGrayColor()
            billingAddressTextField.textColor = UIColor.lightGrayColor()
            billingAddressTwoTextField.textColor = UIColor.lightGrayColor()
            billingCityTextField.textColor = UIColor.lightGrayColor()
            billingStateTextField.textColor = UIColor.lightGrayColor()
            billingStateTextField.textColor = UIColor.lightGrayColor()
            billingPostalCodeTextField.textColor = UIColor.lightGrayColor()
            billingCountryTextField.textColor = UIColor.lightGrayColor()
        }

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let serviceKeys = Array(Set(listOfRestrictions.map {$0.service!})).map{ $0 }
serviceKeys.map { key in
        self.restriction[key] = listOfRestrictions.filter{ $0.service! == key }.map { $0.sample! }
}

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public var messageStatus = MessageStatus.IncomingMessage {
    didSet {
        self.messageStatusChanged(messageStatus)
        switch messageStatus {
        case .IncomingMessage:
            haloView.alpha = 0.0
            whiteCircleView.fillColor = .clearColor()
            whiteCircleView.borderColor = .clearColor()
            colorCircleView.fillColor = .clearColor()
            colorCircleView.borderColor = .clearColor()
            haloView.color = .clearColor()
        default:
            whiteCircleView.fillColor = collectionViewBackgroundColor
            haloView.alpha = 1.0
        }
        
        switch messageStatus {
        case .ReadedMessage:
            colorCircleView.fillColor = bubbleColor
            colorCircleView.borderColor = bubbleColor
            haloView.color = bubbleColor
        case .DeliveredMessage:
            colorCircleView.fillColor = .whiteColor()
            colorCircleView.borderColor = bubbleColor
            haloView.color = bubbleColor
        case .NonDeliveredMessage:
            colorCircleView.fillColor = .clearColor()
            colorCircleView.borderColor = bubbleColor
            haloView.color = .clearColor()
        default: break
        }
    }
}

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//
//  How ARC causes memory leaks and leads to crashes out of the blue
//

import Foundation

let noLeak = 131030          // Empirically found constant
let withLeak  = noLeak*10

// Single-linked list
class R {
    var _a : R?
    init(a : R?) {
        _a = a
    }

//    One have to resort to a manual C-like code to fix it
//
//    deinit {
//        var i = self._a;
//        while let i2 = i {
//            let t = i2._a
//            i2._a = nil
//            i = t
//        }
//    }
}

func test(n:Int, leak:Bool) {
    let p0 = R(a : nil)
    var p = R(a : p0)
    for _ in 1...n {
        p = R(a : p)
    }
    if leak {
        // When the list is not cyclic it will be deleted by ARC just fine...
        p0._a = p
    }
} // Oh wait, the destructor isn't tail-recursive...

test(withLeak, leak: true)
print("Bad leaking function")
test(noLeak, leak: false)
print("Good function")

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struct Family: Enumerable {
  var name = "Smith"
  var father = "Bob"
  var mother = "Alice"
  var child = "Carol"

  func each(block: (String) -> Void) {
    for i in 0...2 {
      switch i {
        case 0: block("\(father) \(name)")
        case 1: block("\(mother) \(name)")
        case 2: block("\(child) \(name)")
        default: break
      }
    }
  }

}

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@objc(Squirrel)
class Белка {
    @objc(initWithName:)
    init (имя: String) { /*...*/ }
    @objc(hideNuts:inTree:)
    func прячьОрехи(Int, вДереве: Дерево) { /*...*/ }
}

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Ждем нового раздела под язык Swift. Ожидается наплыв.