"Native" Dual Label UIButton

UIButton+DualLabel.swift

extension UIButton {
    /// Sets an UIButton's left and right title separated by invisible spaces, to give the impression of having two labels
    /// without losing native UIButton properties, such as animations that come with the .system button type.
    /// Requires tintColor to match the button's title color.
    func setDualTitle(left: String, right: String, horizontalMargin: CGFloat = 8) {
        let columnCount = (UIScreen.main.bounds.width - (horizontalMargin * 2)) * 0.2
        let columns = String(repeating: "|", count: Int(columnCount))
        let attributedString = NSMutableAttributedString(string: left, attributes: [.foregroundColor: tintColor])
        attributedString.append(NSAttributedString(string: columns, attributes: [.foregroundColor: UIColor.clear]))
        attributedString.append(NSAttributedString(string: right, attributes: [.foregroundColor: tintColor]))
        setAttributedTitle(attributedString, for: .normal)
        contentEdgeInsets = UIEdgeInsets(top: 0, left: horizontalMargin, bottom: 0, right: horizontalMargin)
    }
}