Apologies if I've missed something (I suppose I must have), but on Mojave, using the Xcode 11 Beta 2, I get this error when using opaque result types:
'some' return types are only available in macOS 10.15.0 or newer
I was just wondering what's going on here. Is this a temporary restriction, or is this only going to be available on Catalina? I wanted to try on Linux using the latest 5.1 to see if it works there, but I'm getting errors from the Swift install, which I see some others are working out elsewhere on the forums.
Is it fair to say that opaque result types will be available everywhere Swift 5.1 is available by the time 5.1 is released?