Extension for UIStackView to align arranged subviews to left or right

UIStackView+Alignment.swift

import UIKit

extension UIStackView {
    
    /// [Source](https://www.iamsim.me/uistackview-left-align-without-stretching/)
    
    public func alignArrangedSubviewsToLeft() {
        
        increaseArrangedSubviewsContentHuggingPriority()
        let stretchingView = getStretchingViewWithLowContentHuggingPriority()
        addArrangedSubview(stretchingView)
    }
    
    /// [Source](https://www.iamsim.me/uistackview-left-align-without-stretching/)
    
    public func alignArrangedSubviewsToRight() {
        
        increaseArrangedSubviewsContentHuggingPriority()
        let stretchingView = getStretchingViewWithLowContentHuggingPriority()
        insertArrangedSubview(stretchingView, at: 0)
    }
    
    private func increaseArrangedSubviewsContentHuggingPriority() {
        
        for view in arrangedSubviews {
            view.setContentHuggingPriority(UILayoutPriority(rawValue: 1000), for: .horizontal)
        }
    }
    
    private func getStretchingViewWithLowContentHuggingPriority() -> UIView {
        
        let stretchingView = UIView()
        stretchingView.setContentHuggingPriority(UILayoutPriority(rawValue: 1), for: .horizontal)
        stretchingView.backgroundColor = .clear
        stretchingView.translatesAutoresizingMaskIntoConstraints = false
        
        return stretchingView
    }
    
}