danielgalasko

/// RepeatingTimer mimics the API of DispatchSourceTimer but in a way that prevents
/// crashes that occur from calling resume multiple times on a timer that is
/// already resumed (noted by https://github.com/SiftScience/sift-ios/issues/52
class RepeatingTimer {

    let timeInterval: TimeInterval
    
    init(timeInterval: TimeInterval) {
        self.timeInterval = timeInterval
    }

danielgalasko

extension UIView {
    func addConstaintsToPinHorizontalEdgesToSuperView(padding: CGFloat = 0) {
        prepareForConstraints()
        self.superview!.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-(padding)-[view]-(padding)-|",
            options: NSLayoutFormatOptions(0),
            metrics: ["padding":padding],
            views: ["view":self]))
    }
    
    func addConstaintsToPinVerticalEdgesToSuperView(padding: CGFloat = 0) {

danielgalasko

extension UITableView {
    /**
    Returns an index path identifying the row and section
    of the cell containing the provided view
    
    :param: cellSubview A subview of any given UITableViewCell in the table. Typically this is either a `UIButton` or `UITextField`
    */
    func indexPathForCellWithSubview(cellSubview: UIView) -> NSIndexPath? {
        let cellFrame = convertRect(cellSubview.bounds, fromView: cellSubview)
        let cellCenter = CGPoint(x: CGRectGetMidX(cellFrame), y: CGRectGetMidY(cellFrame))

danielgalasko

func delay(delay:Double, closure:()->()) {
    dispatch_after(
        dispatch_time(
            DISPATCH_TIME_NOW,
            Int64(delay * Double(NSEC_PER_SEC))
        ),
        dispatch_get_main_queue(), closure)
}

danielgalasko

- (NSString *)description {
    //We list the properties and their values using the ever convenient `dictionaryWithValuesForKeys` 
    //which will get the values of the corresponding properties
    NSDictionary *debugProperties = [self dictionaryWithValuesForKeys:@[NSStringFromSelector(@selector(<#Insert property name#>))]];
    return [NSString stringWithFormat:@"<%@: %p> %@", self.class, self, debugProperties];
}

danielgalasko

/**
 Represents a semantic version number in the form X.Y.Z
 
 Its most useful feature is that it implements `Comparable`
 making for easy comparison checks.
 */
struct VersionNumber {
    let version: String
    
    init(version: String) {

danielgalasko

struct AppInfo {
    static func buildNumber() -> String {
        return AppInfo.infoDictionary["CFBundleVersion"] as! String
    }
    
    static func versionNumber() -> String {
        return AppInfo.infoDictionary["CFBundleShortVersionString"]as! String
    }
    
    private static var infoDictionary: [NSObject: AnyObject] {

danielgalasko

extension MyViewController {
  func registerForPeekAndPopWithCollectionView(collectionView: UICollectionView) {
    guard #available(iOS 9.0, *) else { return }
    if traitCollection.forceTouchCapability == .Available {
      registerForPreviewingWithDelegate(self, sourceView: collectionView)
    }
  }
}

danielgalasko

@available(iOS 9.0, *)
extension TwitterFeedViewController: UIViewControllerPreviewingDelegate {
       public func previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
           guard let indexPath = collectionView.indexPathForItemAtPoint(location),
           cell = collectionView.cellForItemAtIndexPath(indexPath),
           let tweet = viewModel.tweetAtIndexPath(indexPath) else { return nil }
           //now we are ready to create our corresponding controller for the tweet
           let tweetViewController = self.navigationCoordinationController.tweetControllerForTweet(tweet)
           //I will expand on this in a bit but this lets us present controllers using peek and pop actions
           tweetViewController.initiatingPreviewActionController = self

danielgalasko

class TweetViewController: UIViewController {
    var initiatingPreviewActionController: UIViewController?
    override func previewActionItems() -> [UIPreviewActionItem] {
        guard let initiatingPreviewActionController = initiatingPreviewActionController else {
            assert(false, "Expected initiatingPreviewActionController to be set")
            return []
        }
        return [UIPreviewAction(title: "Share", style: .Default,
            handler: {[unowned self] (_, _) -> Void in
                let shareSheet = self.createShareSheet()