bananafish911

extension Int {
    /// SwiftRandom extension
    static func random(lower: Int = 0, _ upper: Int = 100) -> Int {
        return lower + Int(arc4random_uniform(UInt32(upper - lower + 1)))
    }
    
    var array: [Int] {
        return description.characters.map{Int(String($0)) ?? 0}
    }
}

bananafish911

extension TimeInterval {
    // builds string in app's labels format 00:00.0
    func stringFormatted() -> String {
        var miliseconds = self.roundTo(places: 1) * 10
        miliseconds = miliseconds.truncatingRemainder(dividingBy: 10)
        let interval = Int(self)
        let seconds = interval % 60
        let minutes = (interval / 60) % 60
        return String(format: "%02d:%02d.%.f", minutes, seconds, miliseconds)
    }

bananafish911

extension UIColor {
    
    /// Format: 0xFFAACC
    convenience init(hex: Int) {
        let components = (
            R: CGFloat((hex >> 16) & 0xff) / 255,
            G: CGFloat((hex >> 08) & 0xff) / 255,
            B: CGFloat((hex >> 00) & 0xff) / 255
        )
        self.init(red: components.R, green: components.G, blue: components.B, alpha: 1)

bananafish911

extension Date {
    
    /// For application labels 
    func toStringAppFormatted() -> String {
        let components = NSCalendar.current.dateComponents([Calendar.Component.day,
                                                            Calendar.Component.month,
                                                            Calendar.Component.year],
                                                           from: self)
        return "\(components.day!).\(components.month!).\(components.year!)"
    }

bananafish911

extension UIViewController {
    
    func showAlert(message: String) {
        let alert = UIAlertController(title: "Message", message:message, preferredStyle: UIAlertControllerStyle.alert)
        alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler:{ (ACTION :UIAlertAction!)in
            debugPrint("User click Ok button")
        }))
        self.present(alert, animated: true, completion: nil)
    }
}

bananafish911

extension String {
    
    ///For placeholders
    static func randomAlphaNumericString(length: Int) -> String {
        let charactersString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
        let charactersArray : [Character] = Array(charactersString.characters)
        
        var string = ""
        for _ in 0..<length {
            string.append(charactersArray[Int(arc4random()) % charactersArray.count])