Optionals in Swift UI - 1.swift

import SwiftUI

struct Tweet: Identifiable {
  var id: UUID
  let message: String
  let imageName: String?

  init(message: String, imageName: String? = nil) {
    self.id = UUID()
    self.message = message
    self.imageName = imageName
  }
}

struct TwitterStream: View {
  let tweets: [Tweet] = [
    Tweet(message: "Wow, this SwiftUI thing seems to be super awesome!"),
    Tweet(message: "Check out these people dancing around because they’re so happy about SwiftUI", imageName: "picture.jpg"),
  ]

  var body: some View {
    List(tweets) { tweet in
      HStack {
        Text(tweet.message)

        if let imageName = tweet.imageName {
          Image(imageName)
        }
      }
    }
  }
}