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iOS Build a Playlist Browser with Swift Refactoring Our Code Wrapping Up!

Posted by Antoine Delanglade
Antoine Delanglade
2,325 Points

When I compile the project I downloaded from the teacher notes, I receive a compile error.

In the file playlist.swift Xcode ask me to do some modifications for the code to run.

the modified code: init(index: Int) { let musicLibrary = MusicLibrary().library let playlistDictionary = musicLibrary[index]

    title = playlistDictionary["title"] as! String!
    description = playlistDictionary["description"]as! String!

    let iconName = playlistDictionary["icon"]as! String!
    icon = UIImage(named: iconName)

    let largeIconName = playlistDictionary["largeIcon"]as! String!
    largeIcon = UIImage(named: largeIconName)

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

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

see the 'as' had to be unwrapped for the project to compile and run. Why?

Di Su
Di Su
845 Points

Since Pasan made the video, Apple have updated Swift to make it safer. see https://developer.apple.com/swift/blog/?id=23.