It is intended. The swift version you provided is the swift version of Objective-C header. So they are the same.
Zhao Xin On Mon, Sep 4, 2017 at 8:01 PM, Adrian Zubarev via swift-users < [email protected]> wrote: > Hi there, > > before filing a new issue I would like to ask if this is intended > behaviour or a bug: > > The Foundation class Operation which has it’s roots in Objective-C has a > few readonly properties like the following one: > > @available(iOS 2.0, *) > open class Operation : NSObject { > ... > open var isExecuting: Bool { get } > ... > } > > On the other hand the Objective-C header looks like this: > > NS_CLASS_AVAILABLE(10_5, 2_0) > @interface NSOperation : NSObject { > ... > @property (readonly, getter=isExecuting) BOOL executing; > ... > @end > > Now I want to create a custom subclass of Operation and override > isExecuting, everything works fine until I try to create a private stored > property named executing: > > final class TransitionOperation : Operation { > // error: cannot override with a stored property 'executing' > private var executing = false > > override var isExecuting: Bool { > ... > } > } > > I’m a little bit confused here: > > - Is this intended behaviour or a bug? > - The Foundation implemented in Swift is not used for iOS deployment, > instead the Obj-C one is used right? > > > > > _______________________________________________ > swift-users mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-users > >
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