[Discussion] Inclusion of CasePaths into the language

[xwu (Xiaodi Wu)]

Yes

Pitch: Even Smarter KeyPaths?

I've started to explore Smart KeyPaths in the latest Swift Development Snapshot with regard to lenses and have been pleasantly surprised: Swift has one of the better out-of-box optics stories I've come across! In (brief) use I've come across a few gaps that I was hoping we could fill in. ## Tuple KeyPaths I hoped these would work already, but I hit a compiler crash: [SR-4888] Crash: Tuple KeyPaths · Issue #47465 · apple/swift · GitHub struct Location { let coords: (lat: Double, lng: Double…