Tutorial app with sea mammals

Summary: Tutorial app for iOS. It follows the same theme as its android counterpart.

Reviewed By: passy

Differential Revision: D15184515

fbshipit-source-id: bb473c0fa863bb325bb33f8e42c8d6b3d9c640ff

iOS/Tutorial/Tutorial/Cards/MarineMammalCell.swift

@@ -0,0 +1,47 @@
+//
+//  MarineMammalCell.swift
+//  Tutorial
+//
+//  Created by Pritesh Nandgaonkar on 5/2/19.
+//  Copyright © 2019 Facebook. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+struct MarineMammal {
+  let name: String
+  let image: URL
+}
+
+class MarineMammalCell: UITableViewCell {
+  
+  @IBOutlet weak var photo: UIImageView!
+  @IBOutlet weak var name: UILabel!
+  
+  func populate(marineMammal: MarineMammal) {
+    let task = URLSession.shared.dataTask(with: marineMammal.image) { [weak self] (data, response, error) in
+      if let unwrappedError = error {
+        print(unwrappedError)
+        return
+      }
+      
+      guard let unwrappedData = data else {
+        print("No Image data received")
+        return
+      }
+      let image = UIImage(data: unwrappedData)
+      
+      guard let unwrappedImage = image else {
+        print("Failed to instantiate an image from Image data")
+        return
+      }
+      DispatchQueue.main.async {
+        self?.photo.image = unwrappedImage
+      }
+    }
+    task.resume()
+    self.name.text = marineMammal.name
+  }
+}
+