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遞迴是程式設計師的最愛也最恨
愛的是簡潔
恨的是出包往往在無形之間（Stack Overflow）
以及效率非常緩慢

所有的遞迴寫法一定可以用迴圈取代
但換來的就是一連串冗長的程式碼了

L. Peter Deutsch 程式設計師說過一段經典名句

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let sortedTradingRecords = tradingRecords.sort { $0.time.compareAsNSDate < $1.time.compareAsNSDate }

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import Foundation

/*
this extension cover these case

www.youtube.com/v/id
www.youtube.com?v=vid
http://www.youtube.com/watch?v=id&feature=youtu.be
http://www.youtube.com/watch?v=id
youtube.be/id

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import Foundation

// string -> define date -> define string -> string

extension NSDate {
    var formattedString: String{
        let formatter = NSDateFormatter()
        // ex: 12.04 -> NSDate
        formatter.dateFormat = "MM.dd"
        formatter.timeZone = NSTimeZone(name: "Asia/Taipei")

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 //One attributed string method
        let theInfoTitleString = "曼麗卡說明 Manli Card\n\n"
        let theInfoTitleAttribute = [NSFontAttributeName: UIFont.systemFontOfSize(22), NSUnderlineStyleAttributeName: 1]
        
        let theInfoDetailString = "是大魯閣草衙道專屬會員卡，更是全台首創結合購物集點、小額付款的一卡通會員卡，讓您一卡在手、暢遊草衙道！"
        
//        let theAllInfoString = theInfoStringTitle + "\n" + theInfoStringDetail
        
        let theInfoTitleAttributedString = NSMutableAttributedString(string: theInfoTitleString, attributes: theInfoTitleAttribute)
        let theInfoDetailAttributedString = NSAttributedString(string: theInfoDetailString)

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//產出用zip為key找 縣市/鄉鎮市區


        println(zipJson?.dictionaryValue.keys.array)
        println(zipJson?.dictionaryValue.values.array)

        for var i = 0; i < zipJson?.dictionaryValue.keys.array.count ; i++ {
        let first = zipJson?.dictionaryValue.keys.array[i]
        let second = zipJson?.dictionaryValue.values.array[i]
        let third = zipJson?.dictionaryValue.values.array[i].dictionaryValue

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{
    "基隆市": {"仁愛區": "200", "信義區": "201", "中正區": "202", "中山區": "203", "安樂區": "204", "暖暖區": "205", "七堵區": "206"},
    "台北市": {"中正區": "100", "大同區": "103", "中山區": "104", "松山區": "105", "大安區": "106", "萬華區": "108", "信義區": "110", "士林區": "111", "北投區": "112", "內湖區": "114", "南港區": "115", "文山區": "116"},
    "新北市": {
      "萬里區": "207", "金山區": "208", "板橋區": "220", "汐止區": "221", "深坑區": "222", "石碇區": "223",
      "瑞芳區": "224", "平溪區": "226", "雙溪區": "227", "貢寮區": "228", "新店區": "231", "坪林區": "232",
      "烏來區": "233", "永和區": "234", "中和區": "235", "土城區": "236", "三峽區": "237", "樹林區": "238",
      "鶯歌區": "239", "三重區": "241", "新莊區": "242", "泰山區": "243", "林口區": "244", "蘆洲區": "247",
      "五股區": "248", "八里區": "249", "淡水區": "251", "三芝區": "252", "石門區": "253"
    },

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{
    "929" : [
             "琉球鄉",
             "屏東縣"
             ],
    "508" : [
             "和美鎮",
             "彰化縣"
             ],
    "884" : [

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func setupCustomTitleViewAndCleanTitle(toTheNavigationItem theNavigationItem: UINavigationItem){
    let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 128, height: 44))
    //Customizing Navigation Bar
    // 3
    let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 128, height: 44))
    imageView.contentMode = .ScaleAspectFit
    // 4
    let image = UIImage(named: "nav_logo")
    imageView.image = image
    // 5

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extension AppDelegate {
    func findCurrentViewController() -> UIViewController{
        let rootVC = UIApplication.sharedApplication().keyWindow?.rootViewController

        return findCurrentViewController(byTempTopVC: rootVC!)
    }
    
    func findCurrentViewController(byTempTopVC vc: UIViewController) -> UIViewController {
        let presentedVC = vc.presentedViewController