You can declare a UIFont as follows:

var font: UIFont!

UIFont has more init() methods:

• UIFont.init(descriptor: UIFontDescriptor, size: CGFloat)
• UIFont.init(name: String, size: CGFloat)

Therefore, you can initialize a UIFont like this:

let font = UIFont(name: "Helvetica Neue", size: 15)

The default font is System, size 17.