Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Build a Playlist Browser with Swift Building the Music Library and Playlist Models Using a Playlist Instance

Brittany D
Brittany D
1,767 Points

Cannot subscript a value of type '[String : CGFloat]-> UIColor' with an index of type 'String'

artists += playlistDictionary["artist"] as! [String]

    let colorsDictionary = playlistDictionary ["backgroundColor"] as! [String: CGFloat]

    backgroundColor = rgbColorFromDictionary(colorsDictionary)

}
func rgbColorFromDictionary(colorDictionary: [String: CGFloat]-> UIColor){
    let red = colorDictionary["red"]! 
    let green = colorDictionary["green"]!
    let blue = colorDictionary["blue"]!
    let alpha = colorDictionary["alpha"]!

//all four of these lets are errors along with the backgroundColor

    return UIColor (red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: alpha)
}

1 Answer

Jack Hawley
Jack Hawley
10,665 Points

I think the second parenthesis is in the wrong place. Try this:

 func rgbColorFromDictionary(colorDictionary: [String: CGFloat]) -> UIColor