<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="">I was just thinking that:<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; line-height: normal; font-family: Menlo; color: rgb(187, 44, 162);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">protocol</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> Foo : </span><span style="font-variant-ligatures: no-common-ligatures" class="">reference</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> {}</span></div></div></blockquote><div class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><div style="margin: 0px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class="">might be more to the point than:</span></div></span></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><div style="color: rgb(187, 44, 162); margin: 0px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">protocol</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> Foo : </span><span style="font-variant-ligatures: no-common-ligatures" class="">class</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""> {}</span></div></span></div></blockquote><div class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><div style="color: rgb(0, 0, 0);" class=""><br class=""></div><div style="color: rgb(0, 0, 0);" class="">I know that it’s currently a moot point because classes are the only* reference-semantics type of type in Swift, but it’s conceivable that there might some day be others. Anyway, I’m not saying it’s a big deal or anything, I’m just trying to think of any source-breaking changes we might want to make before Swift 3 drops, and this seems like an easy one.</div><div style="color: rgb(0, 0, 0);" class=""><br class=""></div><div style="color: rgb(0, 0, 0);" class="">- Dave Sweeris</div><div style="color: rgb(0, 0, 0);" class=""><br class=""></div><div style="color: rgb(0, 0, 0);" class="">* I’m not actually sure this is true. I have a very vague recollection about some protocols getting reference semantics in certain circumstances, but the memory is so hazy I’m not sure I trust it. Also I can’t remember if the “indirect” keyword in enums affects the semantics.</div></span></div></body></html>