Jumped to swift-sh a tool which allows to write CLI in Swift with dependencies.

#!/usr/bin/swift sh

import Foundation
import PromiseKit  // @mxcl ~> 6.5
print("That is how it works 👆🏿")

Nice gists of all sessions in WWDC 2019 Session Notes.

Great idea to store app container and use in tests one small change for Xcode, one giant leap for productivity.

Xcode 11 Previews could be used without SwiftUI and while developing for iOS versions prior to 13: Using Xcode Previews with existing views without using SwiftUI.

Watched Point-Free episode #62 Parser Combinators: Part 1.

Flashback:

Watched Swift Talk #157 Asynchronous Networking with SwiftUI.