<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=""><div class="">I would love to be able to have stored properties in addition to the varying elements. </div><div class=""><br class=""></div><div class="">Now, I end up creating a secondary struct T and doing case a(T, whatever), b(T, whatever), c(T, whatever), etc. where the same associated structure is every case, *or* I end up putting the enum into a struct which means the guiding semantics are the struct and not the enumeration. Both approaches are ugly. </div><div class=""><br class=""></div><div class="">-- E</div><br class=""><div><blockquote type="cite" class=""><div class="">On Oct 9, 2016, at 6:03 PM, Jay Abbott 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=""><div class="">Mateusz,<br class=""></div><br class="">To me, "Enumeration defines a type with well defined set of possible values" seems to contradict the idea of having properties that can have different values. What could you do with this special enum - what would the code that uses it look like?<br class=""><br class=""><br class=""></div><br class=""><div class="gmail_quote"><div dir="ltr" class="">On Sun, 9 Oct 2016 at 04:56 Robert Widmann via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class="gmail_msg"><div class="gmail_msg">I’ve started doing this to try and mimic “Smart Constructors” in Haskell and I think it works quite well.</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg"><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures;color:#ba2da2" class="gmail_msg">struct</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> Format {</span></div><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> </span><span style="font-variant-ligatures:no-common-ligatures;color:#ba2da2" class="gmail_msg">enum</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> FormatBacking {</span></div><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> </span><span style="font-variant-ligatures:no-common-ligatures;color:#ba2da2" class="gmail_msg">case</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> SMALL(</span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">, </span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">)</span></div><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> </span><span style="font-variant-ligatures:no-common-ligatures;color:#ba2da2" class="gmail_msg">case</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> MEDIUM(</span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">, </span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">)</span></div><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> </span><span style="font-variant-ligatures:no-common-ligatures;color:#ba2da2" class="gmail_msg">case</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> LARGE(</span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">, </span><span style="font-variant-ligatures:no-common-ligatures;color:#703daa" class="gmail_msg">Int</span><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg">)</span></div><div style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo" class="gmail_msg"><span style="font-variant-ligatures:no-common-ligatures" class="gmail_msg"> }</span></div></div></div></blockquote></div></div></blockquote></div><br class=""></body></html>