Swift UIView Utils - For AutoLayouting Programmatically

UIViewUtils.swift

extension UIView {
    
    func addConstarintsWithFormat(format: String, views: UIView...) {
        var viewsDictionary = [ String : UIView ]()
        for (index, view) in views.enumerate() {
            let key = "v\(index)"
                viewsDictionary[key] = view
                view.translatesAutoresizingMaskIntoConstraints = false
        }
        
        self.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat(format, options: NSLayoutFormatOptions(), metrics: nil, views: viewsDictionary))
    }
}