I am trying to implement some of the methods and properties in NSOrderedSet.
The read-only property "reversedOrderedSet" has the @NSCopying attribute according to the NSOrderedSet class reference.
So, I tried to do this:
@NSCopying public var reversedOrderedSet: NSOrderedSet {
return NSOrderedSet.init(array: _orderedStorage.reverse())
}
The compiler says "@NSCopying requires the property to be mutable". When inherited by NSMutableOrderedSet, doesn't this property qualify to be mutable?
Does @NSCopying not apply here? Is my understanding of "mutable (stored) property" flawed? Or is there a problem with the implementation?
Nowhere in Foundation is @NSCopying being used currently. So don't have a "reference implementation" :)
Pushkar N Kulkarni,
IBM Runtimes
Simplicity is prerequisite for reliability - Edsger W. Dijkstra
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