<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Please see<div class=""><br class=""><div class=""><a href="https://github.com/PureSwift/SwiftFoundation/blob/develop/Sources/SwiftFoundation/Null.swift" class="">https://github.com/PureSwift/SwiftFoundation/blob/develop/Sources/SwiftFoundation/Null.swift</a></div><div class=""><br class=""><div class=""><a href="https://github.com/PureSwift/SwiftFoundation/blob/develop/Sources/SwiftFoundation/JSON.swift" class="">https://github.com/PureSwift/SwiftFoundation/blob/develop/Sources/SwiftFoundation/JSON.swift</a></div><div class=""><br class=""></div><div class="">Specifically, line 77 in JSON.swift</div><div class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span class="Apple-tab-span" style="white-space: pre;"><br class="Apple-interchange-newline"> </span>Coleman,</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Jun 23, 2016, at 12:54 AM, David Waite <<a href="mailto:david@alkaline-solutions.com" class="">david@alkaline-solutions.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On Jun 22, 2016, at 10:14 PM, Alsey Miller via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=us-ascii" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><p style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, 'Segoe UI', Arial, freesans, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol'; font-size: 14px;" class="">Add a struct <code style="box-sizing: border-box; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 11.899999618530273px; padding: 0.2em 0px; margin: 0px; background-color: rgba(0, 0, 0, 0.0392157); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px;" class="">Null</code> to the Swift 3.0 Foundation value types. As a struct, <code style="box-sizing: border-box; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 11.899999618530273px; padding: 0.2em 0px; margin: 0px; background-color: rgba(0, 0, 0, 0.0392157); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px;" class="">Null</code> is more performant (no ARC or memory allocation) than <code style="box-sizing: border-box; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 11.899999618530273px; padding: 0.2em 0px; margin: 0px; background-color: rgba(0, 0, 0, 0.0392157); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px;" class="">NSNull</code>, 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.</p></div></div></div></blockquote>I assume you are thinking of [String:SomeRootJSONProtocol] as the Object type? However, once you reference the data as a protocol however, it will be promoted and stored as a reference type.</div><div class=""><br class=""></div><div class="">I’ve preferred a similar approach to the following for JSON (although this isn’t my code): <a href="https://gist.github.com/dorentus/1e2132edfb174028bf11#file-json-swift-L30-L38" class="">https://gist.github.com/dorentus/1e2132edfb174028bf11#file-json-swift-L30-L38</a></div><div class=""><br class=""></div><div class="">-DW</div></div></div></blockquote></div><br class=""></div></div></div></body></html>