<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="">It seems like it would make sense to model enum subsets as a subtype relationship.<div class=""><br class=""></div><div class="">Is the core team planning on drawing up a structs/enums subtyping proposal later this year?</div><div class=""><br class=""></div><div class="">Austin</div><div class=""><div class=""><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jun 3, 2016, at 10:25 PM, Chris Lattner <<a href="mailto:clattner@apple.com" class="">clattner@apple.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 3, 2016, at 2:35 PM, T.J. Usiyan 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=""><div dir="ltr" class="">Since this seems to have some interest, I've made a gist.<div class=""><br class=""></div><div class=""><a href="https://gist.github.com/griotspeak/963bc87a0c244c120264b11fb022d78c" class="">https://gist.github.com/griotspeak/963bc87a0c244c120264b11fb022d78c</a></div></div></div></blockquote><br class=""></div><div class="">We have frequently discussed introducing subtype relationships between structs and enums, in an effort to allow limited implicit promotions (e.g. from small integers to wider integers). Wouldn’t that be a more general solution to this same problem?</div><div class=""><br class=""></div><div class="">-Chris</div><br class=""></div></div></blockquote></div><br class=""></div></div></div></body></html>