I have specific line of code which only execute if ios version is lower than 15.

I could if-else if ios is great 15 by these.

            if #available(iOS 15.0, *) {
            }else {}

I would to do opposite of it. If ios version is lower than 15 then execute specfic line of code. I know I can write code in else part and it should have work but looking for more ideas and faster way for app

CodePudding user response：

For older versions of Swift, that's exactly how you do it.

Swift 5.6 (i.e. Xcode 13.3 or newer) added the condition you're asking for, as #unavailable, so you can now do this:

if #unavailable(iOS 15.0) {
    // only runs if <iOS 15
}

All the details are here: https://github.com/apple/swift-evolution/blob/main/proposals/0290-negative-availability.md