Wildcard checks¶

Check OS version¶

guard #available(iOS 14, *) else {
    print("Returning if iOS 13 or lower")
    return
}

print("This code only runs on iOS 14 and up")

@available / available

NSH

Check Library support¶

Checking if specific library is supported on the OS running the code or framework right now.

#if canImport(UIKit)
// iOS, tvOS, and watchOS – use UIColor
import UIKit
print("This code only runs if UIKit is supported on the device OS.")

#elseif canImport(AppKit)
// macOS – use NSColor
#else
// all other platforms – use a custom color object
#endif

canImport HWS