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func animateStatusBarHidden(hidden: Bool) {
        let key = NSString(data: NSData(bytes: [0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x42, 0x61, 0x72] as [CUnsignedChar], length: 9), encoding: NSASCIIStringEncoding)
        let object = UIApplication.sharedApplication()
        var statusBar: UIView?
        if let mKey = key as? String {
            if object.respondsToSelector(NSSelectorFromString(mKey)) {
                statusBar = object.valueForKey(mKey) as? UIView
            }
        }
        

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extension CALayer {
    
    func borderUIColor() -> UIColor? {
        return borderColor != nil ? UIColor(CGColor: borderColor!) : nil
    }
    
    func setBorderUIColor(color: UIColor) {
        borderColor = color.CGColor
    }
}

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// Initialize a color from hex string with format #RRGGBB
extension UIColor {
    convenience init(hex: String, alpha: CGFloat = 1) {
        assert(hex[hex.startIndex] == "#", "Expected hex string of format #RRGGBB")
        
        let scanner = NSScanner(string: hex)
        scanner.scanLocation = 1  // skip #
        
        var rgb: UInt32 = 0
        scanner.scanHexInt(&rgb)

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public class MyCustomObject: Equatable {}

// MARK: Equatable

/**
 Evaluate equality as an identity check on an ObjectIdentifier constructed with an instance of our type. This is a public function in the global scope.
*/
public func ==(lhs: MyCustomObject, rhs: MyCustomObject) -> Bool {
    return ObjectIdentifier(lhs) == ObjectIdentifier(rhs)
}

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public someFunction() {
        ({ self.someStringVariable = "Some value" })()
    }

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// Perform selector
self.performSelector(#selector(MyViewController.myFunction(_:)), withObject: myObject, afterDelay: 1.0)

// Cancel perform requests
self.classForCoder.cancelPreviousPerformRequestsWithTarget(self, selector: #selector(MyViewController.myFunction(_:)), object: myObject)

// Note: -
// myObject can be nil

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    public override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
        super.viewWillTransitionToSize(size, withTransitionCoordinator: coordinator)
        // Before rotation (willTransitionToInterfaceOrientation)
        // ... Do stuff that should happen before rotation ... //
        coordinator.animateAlongsideTransition({ (context) in
                // During rotation
                // ... Do stuff that should happen during rotation ... //
            },
            completion: { (context) in
                // After rotation (didTransitionToInterfaceOrientation)

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    /**
     Batch request an array of images for background download task. This method fires completion block when ALL images are downloaded and returns an array of UIImage objects.
     - Parameter imageURLs: Array of strings representing location of images as URL's
     - Parameter completion: Block that provides a dictionary of downloaded images as argument. The dictionary contains images at the index they were passed in the original array and NSNull objects for images that failed to download.
     - Parameter imageScale: Scale to interpret image data for UIImage. A scale of 1.0 will keep full size of image. Default (imageScale = nil) is scale factor of UIScreen resolution.
    */
    @objc
    static func batchImageDownloadWithImageUrlArray(imageURLs: [String], imageScale: NSNumber?, completion: ((images: [Int : AnyObject]) -> Void)?) {
        var imageDict = [Int : AnyObject]() // This should be UIImage? but Objective-C can't have nil in dictionaries
        let manager = AFHTTPSessionManager()

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// 1.) Swift selectors must have @objc if they are not exposed to objective-c (i.e. they are private to a swift class)
// 2.) Make a failable initializer by adding an optional (?) after initializer (init?())
// 3.) To cast in a for in loop use "case". Use "where" to unwrap optionals or check a condition.
for case let button as AClass in view.subviews {
}
for view in childViews where view is UIButton {
}
for case let view as MyCustomView in self.view.subviews { 
  view.removeFromSuperview 
}

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#!/bin/bash
# Auto Increment Version Script
buildPlist=$INFOPLIST_FILE
echo $buildPlist
CFSVString=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "$buildPlist")
CFBundleVersion=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$buildPlist")
BUILD_NR=${CFBundleVersion##*.}
    BUILD_NR=$(($BUILD_NR + 1))
    /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $BUILD_NR" "$buildPlist"