What’s the value of the Haskell code? It’s a great language but not really supported on iOS. Would love for it to be.

Back to the one idiomatic C example. The few places where it’s terse does not make up for the many other places where it’s not. You also have memory management with malloc for additional code. If you compare nontrivial code, Swift is a more modern, safer, less verbose, etc way to develop iOS apps vs Objective C.