https://www.jessesquires.com/blog/2020/07/16/swift-globals-and-static-members-are-atomic-and-lazily-computed
https://blog.krzyzanowskim.com/2020/07/09/coretext-academy-part-1/+https://blog.krzyzanowskim.com/2020/07/10/coretext-swift-academy-part-2/+https://blog.krzyzanowskim.com/2020/07/13/coretext-swift-academy-part-3/