[Pitch] Last expression as return value

Evolution Pitches
201

I realized I was unclear: "Last expression as return value" doesn't solve this problem, like a keyword does. I read through the original pitch, today. It's missing a do/catch example where multiple scope exits are necessary. I think it would have been more popular with a good one included.

The following is not a good one, but has the form of what needs to be addressed.

Current compiling Swift:

let foo = try {
  do {
    return try bar()
  } catch {
    guard fallbackCondition else  {
      print("this is unexpected, investigate this")
      return "Error \(error)"
    }

    return switch value {
    case 0x80..<0x0800: "No a problem"
    default: try {
      print("Ultra broken! \(error)")
      throw error
    } ()
    }
  }
} ()

Better, even if guard doesn't work like it should :

let foo = try do {
  try bar()
} catch {
  if !fallbackCondition {
    print("this is unexpected, investigate this")
    break "Error \(error)"
  }

  break switch value {
  case 0x80..<0x0800: "Not a problem"
  default: 
    print("Ultra broken! \(error)")
    throw error
  }
}
[Pitch] Valued break