An unsigned integer that can be used as a hash table address.
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
If two string objects are equal (as determined by the
is method), they must have the same hash value. This property fulfills this requirement.
You should not rely on this property having the same hash value across releases of macOS.