https://stackoverflow.com/q/68766597/1271826

Image.swift

struct Images {
    static func minus(pointSize: CGFloat? = nil) -> UIImage? {
        image(named: "minus", pointSize: pointSize)
    }

    static func trash(pointSize: CGFloat? = nil) -> UIImage? {
        image(named: "trash", pointSize: pointSize)
    }

    private static func image(named name: String, pointSize: CGFloat? = nil) -> UIImage? {
        let configuration = UIImage.SymbolConfiguration(pointSize: pointSize ?? 24)  // use whatever default size you want
        return UIImage(systemName: name, withConfiguration: configuration)
    }
}

Then you can do things like:

imageView.image = Images.minus()

Or

imageView.image = Images.minus(pointSize: 18)

Another option (one that honors accessibility settings) is to use UIFont.TextStyle:

struct Images {
    static func minus(textStyle: UIFont.TextStyle? = nil) -> UIImage? {
        image(named: "minus", textStyle: textStyle)
    }

    static func trash(textStyle: UIFont.TextStyle? = nil) -> UIImage? {
        image(named: "trash", textStyle: textStyle)
    }

    private static func image(named name: String, textStyle: UIFont.TextStyle? = nil) -> UIImage? {
        let configuration = UIImage.SymbolConfiguration(textStyle: textStyle ?? .body)
        return UIImage(systemName: name, withConfiguration: configuration)
    }
}

And then you can do things like:

imageView.image = Images.minus(textStyle: .headline)