Objective-C @available guard AND'ed with more conditions

Question

Objective-C has an @available expression in XCode 9+ / LLVM 5+ that allows you to guard a block of code to at least a certain OS version so that it won\'t emit unguarded ava

Answer 1

The way I came up with that seems to change the layout of the code the least is:

do {
  if (@available(iOS 11.0, *)) {
    if (some_condition) {
      // code to run when on iOS 11+ and some_condition is true
      break;
    }
  }
  // code to run when on older iOS or some_condition is false
} while (0);

which is still ugly.