Is it possible to concatenate variable name and string/integer in Swift?

Question

Within the Javascript or jQuery it is possible to concat strings and variable names like:

var id = 5;
$("#wrapper_" + id).hide();

With Swift I want to achieve the same, something like:

func eventColors (colorID: Int, view: UIView) {
    view.backgroundColor = Constants.Color.eventColor + colorID // Incorrect
}

Constants structure:

struct Constants {

   struct Color {
      static let eventColor1: UIColor = UIColor(red:0.06, green:0.44, blue:0.64, alpha:1)
      static let eventColor2: UIColor = UIColor(red:0.86, green:0.30, blue:0.99, alpha:1)
      static let eventColor3: UIColor = UIColor(red:0.50, green:0.44, blue:0.64, alpha:1)
   }

}

Answer 1

You cannot create variable names on the fly in Swift. You should consider using an array here instead. Make eventColor an array of colors:

struct Constants {

    struct Color {
        static let eventColor: [UIColor] = [
            UIColor(red:0.06, green:0.44, blue:0.64, alpha:1),
            UIColor(red:0.86, green:0.30, blue:0.99, alpha:1),
            UIColor(red:0.50, green:0.44, blue:0.64, alpha:1)
        ]
    }

}

And then select your color like this:

view.backgroundColor = Constants.Color.eventColor[colorID - 1]