A Small Improvement To UIView and UIStackView

I write a lot of UI code in UIKit, and in particular in code rather than using Interface Builder.

Quite often I'll want to add multiple subviews to a UIView, or multiple arranged subviews to a UIStackView. And I end up with code like this:

view.addSubview(subview1)
view.addSubview(subview2)
view.addSubview(subview3)

stackView.addArrangedSubview(subview1)
stackView.addArrangedSubview(subview2)
stackView.addArrangedSubview(subview3)
stackView.addArrangedSubview(subview4)
stackView.addArrangedSubview(subview5)

Which isn't amazing to read. It's a lot of duplication, and makes it slower to create new views. I almost always end up writing these extensions:

extension UIView {
    func addSubviews(_ subviews: [UIView]) {
        for view in subviews {
            addSubview(view)
        }
    }

    func addSubviews(_ subviews: UIView...) {
        for view in subviews {
            addSubview(view)
        }
    }
}

extension UIStackView {
    func addArrangedSubviews(_ subviews: [UIView]) {
        for view in subviews {
            addArrangedSubview(view)
        }
    }

    func addArrangedSubviews(_ subviews: UIView...) {
        for view in subviews {
            addArrangedSubview(view)
        }
    }
}

I create both versions because sometimes you can have an array of subviews to add, so it's nice to be able to just call view.addSubviews(myArrayOfViews). But usually I have a scenario like the one above, so I can use the variadic function and replace the 8 lines of code with these 2:

view.addSubviews(subview1, subview2, subview3)

stackView.addArrangedSubviews(subview1, subview2, subview3, subview4, subview5)