<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=""><span style="font-family: LucidaGrande;" class="">As I understand it, the current draft doesn't appear to support composability very well, though. If the backing property holds the storage, you won't be able, for instance, to have a `(observable, lazy)` property.</span><div class="" style="font-family: LucidaGrande;"><br class=""></div><div class="" style="font-family: LucidaGrande;">Should composability be a goal? Is there a way to classify behaviors that can and can't compose?</div>
<br class=""><div><blockquote type="cite" class=""><div class="">Le 17 déc. 2015 à 12:37:25, Joe Groff via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> a écrit :</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="">Hi everyone. Chris stole my thunder already—yeah, I've been working on a design for allowing properties to be extended with user-defined <strike class="">delegates^W</strike> behaviors. Here's a draft proposal that I'd like to open up for broader discussion. Thanks for taking a look!<div class=""><br class=""></div><div class="">-Joe</div><div class=""><br class=""></div><div class=""><a href="https://gist.github.com/jckarter/f3d392cf183c6b2b2ac3" class="">https://gist.github.com/jckarter/f3d392cf183c6b2b2ac3</a></div>
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