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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The magic is definitely weird. The base views with Body == Never are what get me, they feel impossible to replicate. There's like a few projects around navigation in SwiftUI like SwiftUI Router (Federica Zanetello had this cool blog post on using NavigationLink) but yeah navigation is very magical too. I honestly wish Apple would open up the SwiftUI framework a little, there are efforts to recreate Combine in an open source way, but SwiftUI seems tougher. This early on in SwiftUI it's super frustrating to wait between WWDCs for updates and fixes.
Chapters 22 to 28 will cover most of the theory surrounding polymorphism à la Swift. The features that Swift offers through protocols and conformance constraints is mostly treated in chapter 26 (bounded quantification). The chapters on higher-order types will give you a taste of what awesome things a future, more powerful type system could do (also be sure to check the Generics Manifesto 17).