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iOS Build a Playlist Browser with Swift Building the Music Library and Playlist Models Struct Initialization

Amir Shahabnia
Amir Shahabnia
29,310 Points
Posted by Amir Shahabnia
Amir Shahabnia
29,310 Points

Optional Binding instead of force unwrapping

So I understand this course is designed based on older version of Swift and Xcode, I was wondering why Pasan did not use Optional Binding and instead he used for example:

title = playlistDictionary["title"] as String!

I was wondering if anyone can help me if we wanted to use optional binding for this part instead of force unwrapping. The whole code is below:

import Foundation import UIKit

struct Playlist { var title: String? var description: String? var icon: UIImage? var largeIcon: UIImage? var artists: [String] = [] var backgroundColor: UIColor = UIColor.clearColor()

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]

} }