Swift String type extension for a height and width estimation

Extensions+String.swift

extension String {
  
  func height(withConstraintWidth width: CGFloat, font: UIFont = UIFont.systemFont(ofSize: 17)) -> CGFloat {
    let constraintRect = CGSize(width: width, height: .greatestFiniteMagnitude)
    let boundingBox = self.boundingRect(with: constraintRect,
                                        options: .usesLineFragmentOrigin,
                                        attributes: [NSAttributedString.Key.font: font],
                                        context: nil)
    
    return ceil(boundingBox.height)
  }
  
  func width(withConstraintHeight height: CGFloat, font: UIFont = UIFont.systemFont(ofSize: 17)) -> CGFloat {
    let constraintRect = CGSize(width: .greatestFiniteMagnitude, height: height)
    let boundingBox = self.boundingRect(with: constraintRect,
                                        options: .usesLineFragmentOrigin,
                                        attributes: [NSAttributedString.Key.font: font],
                                        context: nil)
    
    return ceil(boundingBox.width)
  }
}