SwiftData's #Predicate macro looks like pure Swift but gets compiled into something else entirely. Some things crash at runtime, some silently return nothing, and !value can behave differently to value == false. https://www.hackingwithswift.com/quick-start/swiftdata/how-to-filter-swiftdata-results-with-predicates

Back in Swift 5.9, if and switch were adjusted to work like expressions so you can assign their result directly to a variable. Clean and consistent, or hard to read? https://www.hackingwithswift.com/swift/5.9/if-switch-expressions