I think NSNull() should be used, not a struct. I don't think that a struct would be more performant. Or maybe the performance doesn't matter at all in any real-world usage scenario. But you may write a benchmark of a realistic (!) use-case (!) if you think otherwise... would be interesting to see the results.
Keeping with NSNull() also simplifies objc-interoperability. -Michael > Am 23.06.2016 um 06:14 schrieb Alsey Miller via swift-evolution > <swift-evolution@swift.org>: > > Add a struct Null to the Swift 3.0 Foundation value types. As a struct, Null > is more performant (no ARC or memory allocation) than NSNull, and will be > needed for Swift JSON decoders and libraries that want to use struct value > types, and be free from classes for their model layer. > > > Coleman, > > > > > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
