phamquochoan

####1. Framework Dog - for iOS ######-- target 1: Labrador ######-- target 2: GoldenRetriever Target 2 have a custom Swift Compiler Flag: -D FUR (I still don't know what -D mean)

class Dog {
  #if FUR
 var furLength: Double = 10

phamquochoan

convenience init(rgba: String) {
    var red:   CGFloat = 0.0
    var green: CGFloat = 0.0
    var blue:  CGFloat = 0.0
    var alpha: CGFloat = 1.0
    
    let formattedCode = rgba.stringByReplacingOccurrencesOfString("#", withString: "")
    let formattedCodeLength = count(formattedCode)
    if formattedCodeLength != 3 && formattedCodeLength != 4 && formattedCodeLength != 6 && formattedCodeLength != 8 {
        fatalError("invalid color")

phamquochoan

postfix func ++ <T: RawRepresentable, V: FloatingPointType>(lhs: T) -> V {
    return (lhs.rawValue as! V) + 1
}

postfix func -- <T: RawRepresentable, V: FloatingPointType>(lhs: T) -> V {
    return (lhs.rawValue as! V) - 1
}

postfix func ++ <T: RawRepresentable, V: IntegerType>(lhs: T) -> V {
    return (lhs.rawValue as! V) + 1

phamquochoan

postfix operator .. { }

postfix func ..<T: RawRepresentable> (lhs: T) -> T.RawValue {
    return lhs.rawValue
}

phamquochoan

lazy var timeFormatter: NSNumberFormatter! = {
        var formatter = NSNumberFormatter()
        formatter.numberStyle = .NoStyle
        formatter.groupingSize = 2
        formatter.groupingSeparator = ":"
        formatter.usesGroupingSeparator = true
        formatter.maximumFractionDigits = 0
        formatter.minimumIntegerDigits = 4
        formatter.maximumIntegerDigits = 4
        return formatter