UIView+pin.swift

extension UIView {
	func pin(toView view: UIView) {
		self.translatesAutoresizingMaskIntoConstraints = false
		let topConstraint = self.topAnchor.constraint(equalTo:
			view.topAnchor)
		let bottomConstraint = self.bottomAnchor.constraint(equalTo: view.bottomAnchor)
		let leadingConstraint = self.leadingAnchor.constraint(equalTo: view.leadingAnchor)
		let trailingConstraint = self.trailingAnchor.constraint(equalTo: view.trailingAnchor)
		NSLayoutConstraint.activate([topConstraint,
									 leadingConstraint,
									 trailingConstraint,
									 bottomConstraint])
		
	}
}