Extension function asking for return type instead of parameter

Question

I am creating an extension of UIFont in Swift that will return a custom font.

import UIKit

extension UIFont {
  func museoSansRounded900(size: CGFloat) -> UIFont {
    return UIFont(name: "MuseoSansRounded900", size: size)!
  }
}

However, when I use the extension self.titleLabel?.font = UIFont.museoSansRounded900(15.0) Xcode returns an error in design time saying '(CGFloat) -> UIFont' is not convertible to 'UIFont'

Am I doing something wrong? Xcode is actually asking for UIFont as a paramater instead of a CGFloat when I am using the function from the extension.

Answer 1

museoSansRounded900 should be a class method as you're trying to call it directly on the UIFont class (which makes it basically a constructor).

class func museoSansRounded900(size: CGFloat) -> UIFont ...