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switch used as an expression
if used as an expression
better compactMap
lazy + private(set)
guard statements
![concise [weak self]](https://images.squarespace-cdn.com/content/v1/63139bb1e1a1a078e071f30c/1680524833793-K3XZ7TW079X52BH9TU8P/47763071-5699-4e47-843d-6ab077117565.gif)
concise [weak self]
omit return keyword
iOS version dropped reminder
ResultBuilder + local constant
LazySequence
generic extensions
raw strings
multiline String
XCTest + try!
orEmpty
isNilOrEmpty
if-else vs switch
variadic arguments
CaseIterable
