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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

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]

} }