Subviews builder

gistfile1.txt

@_functionBuilder
struct SubviewsBuilder {
    static func buildBlock(_ views: UIView...) -> [UIView] {
        return views
    }
}

extension UIView {
    func addSubviews(@SubviewsBuilder _ subviews: () -> [UIView]) -> UIView {
        subviews().forEach { addSubview($0) }
        return self
    }
}


let view = UIView()
let containerView = UIView()

view.addSubviews {
    containerView.addSubviews {
        UIView()
        UIView()
    }
    UIView()
}