The resource’s unique identifier, returned as an
- iOS 5.0+
- macOS 10.7+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
This identifier can be used to determine equality between file system resources with the
isEqual(_:) method. Two resources are equal if they have the same file-system path or if their paths link to the same inode on the same file system.
The value of this identifier is not persistent across system restarts.
static let isPackageKey: URLResourceKey
Key for determining whether the resource is a file package, returned as a Boolean
NSNumber object (read-write in macOS 10.8 and later, read-only in previous versions). A
true value means that the resource is a file package.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software