christopherweems

// Swift should suggest the remaining cases, 
// to a novice it is not clear why this does not cover 
// the full range of values of an Int

switch semVersion.major {
case 10...:
    return 6

case ...9:
    return 5

christopherweems

// Simple function converting from UIViewAnimationCurve to UIViewAnimationCurveOptions
// Not all UIViewAnimationCurve values have a specified equivalent UIViewAnimationCurveOptions,
// making it tricky to use the animation curve of the keyboard with UIView.animateWithDuration(...) API.
// This works as late as iOS 9.1, but could change in the future.

extension UIViewAnimationCurve {
    func toOptions() -> UIViewAnimationOptions {
        return UIViewAnimationOptions(rawValue: UInt(rawValue << 16))
    }
}