gistfile1.swift

extension UIView {
	static func build<T: UIView>(builder: ((T) -> ())? = nil) -> T {
		let view = T(frame: .zero)
		view.setTranslatesAutoresizingMaskIntoConstraints(false)
		builder?(view)

		return view
	}
}

// Usage
let toggleWrapper: UIView = .build { view in
	view.backgroundColor = UIColor.n7Color()
}

lazy var customLabel: UILabel = .build { label in
  label.textColor = UIColor.redColor()
}