Hacking with Swift Live 2021

My Xcode projects and sources created during Hacking With Swift Live online-workshops hosted by @twostraws.

Day 1

• Various Swift 5.5 features and additions: Check out the code ContentView.swift

• Message Inbox: Learning about the new basic concurrency features: async and await keywords, SwiftUI .task modifier (as alternative to .onAppear), async let assignment and Task struct to run/submit parallel tasks

• Practice Petitions: Writing a small app showing "petitions" fetched and decoded using the new concurrency approach

• Practice Chat Messages: Writing an app downloading 3 independent JSON data files and displaying them using SwiftUI

Day 2

• Message Inbox: Learning more about the concurrency features: Task suspend, cancellation, sleep, TaskGroup. Read the code in ContentView.swift

• Practice News Stories: Writing a small app showing news stories fetched from 5 JSON feeds, concatenating and sorting for display.

• Heterogenous TaskGroups: How to handle tasks within a TaskGroup returing different types? Wrap the result in an enum! Read the code in ContentView.swift

• Practice TaskGroup: Writing a asynchonous loadData method fetching data from different locations and of different types, combining the result before updating the views model. Read the code in ContentView.swift!

• Actor: What is an actor and its purpose? Simple examples in ContentView.swift: URLCache, BankAccount, BasketballTeam and Player. Handling Hashable and Codable for actors, when to use nonisolated and isolated keyword and how global actors, the MainActor fit into the picture.

  Bonus: Using Task.detached to run code parallely not bound to the same actor which the View might inherit from its properties!

• Bus+: new features in SwiftUI so far AsyncImage, .task modifier (to be continued on day 3!)