Passed over WWDC 2019 - The Things You May Have Missed which lists all new what was declared on WWDC 19. List is impressive.

Passed over Continuous Integration and Continuous Delivery with Jenkins and Fastlane and Getting Started with Fastlane for Automating Beta Testing and App Deployment and Swift—Continuous Integration (CI) and Adding Continuous Integration to a Swift project. Next week I will probably follow all this.

Passed over Contributing to the Swift Benchmark Suite.

Passed over parts of AudioKit which implement FFT and STFT. Probably will use one of these.

Read My Tech Interviews Experience: Failures, Successes and Tips for you. Authors own one page CV worth keeping a bookmark. Mentions in the post that Apple employee given him some tips on what to add to the CV since he knew what Apple recruiters look for.