Created
June 9, 2022 15:28
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| // I learned about `#if canImport(module, _version: x.y)` from Tony Allevato: | |
| // https://forums.swift.org/t/pitch-sdk-conditional-code/52642/4 | |
| // | |
| // Does this work reliably? I have no idea! | |
| // I have only done some quick experiments in a playground. | |
| // | |
| // The Foundation version in Xcode 14.0b1 is: | |
| // - in iOS's Foundation.swiftinterface: 1932.104 | |
| // - in macOS's Foundation.swiftinterface: 1932.401 | |
| // | |
| // Checking for the smaller number seems to work for both OSes. | |
| #if canImport(Foundation, _version: 1932.104) | |
| print("We're using the macOS 13/iOS 16 base SDK") | |
| #elseif canImport(Foundation) | |
| print("We're using an older base SDK") | |
| #endif |
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If you run this code in Xcode 14.0b1, you'll enter the first branch. If you run it in Xcode 13.4, you'll enter the second branch. Tested in a macOS and iOS playground, respectively. I haven't tested this in a real project.