• create a dark-mode enabled app.
• use vector images as image assets.
• use the UITextField to get user input.
• used the delegate pattern.
• Swift protocols and extensions.
• Swift guard keyword.
• Swift computed properties.
• Swift closures and completion handlers.
• use URLSession to network and make HTTP requests.
• Parse JSON with the native Encodable and Decodable protocols.
• use Grand Central Dispatch to fetch the main thread.
• use Core Location to get the current location from the phone GPS.