Type annotate everything. Don’t mix integers and doubles, be explicit. Most important of all, do not ever make a long chain of nested result building function calls with those stupid trailing untyped dangling {} closures, especially when the closure expects an implicit return of an opaque ‘some’ type.

What I’m saying is, don’t use SwiftUI. It’s a pee filled kiddie pool to attract JavaScript react devs with awful performance and semantics.