Hmm, that is interesting to know. I had not realised that URL is in fact NOT a NSURL but a new type that is based on NSURL (and can be toll-free bridged I assume?). I also presume that the same is true for Data/NSData, Date/NSDate etc?
(Failure on my part, as I did of course know that the .path method/var is in fact different on URL and NSURL) Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 06 Jan 2017, at 14:39, Rod Brown via swift-users <swift-users@swift.org> > wrote: > > Hi Jan, > > The Swift 3 URL struct has a modernized version of the NSURL API which works > far better in Swift. This replaces “getResourceValue(…)” with the API you > mentioned: “resourceValues(forKeys:)”. > > > Previously, in Swift 2, you had to use an separate value, use > AutoreleasingUnsafeMutablePointers, conditionally cast and then hope you got > the value, and that you used the correct typecast for the key you were asking > for: > > let url = NSURL(fileURLWithPath: "/Users/me/Desktop/File.png") > > var fileType: AnyObject? = nil > do { > try url.getResourceValue(&fileType, forKey: NSURLTypeIdentifierKey) > > if let type = fileType as? String { > // Use the file type here > } else { > // Handle error > } > } catch { > // Handle error > } > > > In Swift 3 with the new Swift URL, the resourceValues(forKeys:) creates a > struct with optional type safe properties representing each resource key > type, and returns it, allowing you to use if let syntax: > > let url = URL(fileURLWithPath: "/Users/me/Desktop/File.png") > if let resourceValues = try? url.resourceValues(forKeys: > [.typeIdentifierKey]), > let fileType = resourceValues.typeIdentifier { > // Use the file type here > } > > > This is a much cleaner, clearer, and type-safe API. > > If you want to use the old API, you can simply cast back to NSURL if you > require the old behaviour. That said, the new one should serve all your needs > and make things so much easier so I recommend you give it a go. > > Hope this helps, > > Rod > > > > >> On 6 Jan 2017, at 6:36 am, J.E. Schotsman via swift-users >> <swift-users@swift.org> wrote: >> >> Hello, >> >> Is getResourceValue a method or URL or only on NSURL? >> After migrating a project to Swift 3 I have code like >> >> var file:URL >> file.getResourceValue(...) // compiles! >> >> From the documentation and the headers I get the impression that this should >> not compile! >> >> TIA, >> >> Jan E. >> _______________________________________________ >> swift-users mailing list >> swift-users@swift.org >> https://lists.swift.org/mailman/listinfo/swift-users > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users _______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
