<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="">An official proposal PR has been opened on this: <a href="https://github.com/apple/swift-evolution/pull/198" class="">https://github.com/apple/swift-evolution/pull/198</a><div class=""><br class=""></div><div class="">It includes clarifications, a few changes, and some better examples.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Russ</div></body></html>