<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><blockquote type="cite" class="">On Sep 10, 2016, at 2:52 PM, Xiaodi Wu via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""></blockquote><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Is that (i.e. having properties in extensions) listed in the completing generics manifesto? It certainly seems like it'd be a worthwhile feature to consider under that umbrella.</span></div></blockquote></div><br class=""><div class="">I think that came up at some point, but was deemed not to be implementable in a sufficiently performant way.</div><div class=""><br class=""></div><div class="">Charles</div><div class=""><br class=""></div></body></html>