In Swift 2, how can I use the #available condition to prevent a block of code from executing on a certain platform? The * seems to allow the version you specify in your deployment target. And specifying iOS Int.max doesn't work.
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vrwim
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So you only want code to execute on any version of iOS, but not at all on OSX? or something like that? – Ian Jun 09 '15 at 21:44
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@Ian Yes, that is what I want – vrwim Jun 09 '15 at 21:45
2 Answers
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#available is used for specifying certain versions on certain platforms. If you only want to limit your code to a certain platform, you can use compiler directives.
#if os(iOS)
// do stuff only on iOS
#elseif os(OSX)
// do stuff only on OS X
#endif
But I believe the reason what you were trying to do with Int.max wasn't working because it requires an UInt32 literal (i.e. up to 4294967295 which is (2^32) - 1 or UInt32.max -1):
if #available(iOS 1000, watchOS 1000, *) {
// Should execute only on OSX higher than deployment target
} else {
}
Ian
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Please have a look at syntax for availability checking in swift 2.0
if #available(platform name version, ..., *) {
statements to execute if the APIs are available
} else {
fallback statements to execute if the APIs are unavailable
}
Narendra G
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