<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 didn't understand your example at all. Care to elaborate?<div class=""><br class=""></div><div class="">Elviro</div><div class=""><br class=""></div><div class=""><div class=""><div><blockquote type="cite" class=""><div class="">Il giorno 24 giu 2017, alle ore 18:05, Daryle Walker <<a href="mailto:darylew@mac.com" class="">darylew@mac.com</a>> ha scritto:</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 23, 2017, at 7:46 AM, Elviro Rocca 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 class="">It's probably late to just casually add a couple of cents to a discussion that has been going for so long, but it seems to me that from a user standpoint, that uses types to structure their programs and define logic and relationships, isomorphic types should be considered the same by the compiler. The added burden of distinguishing between, to say, a function that takes 2 arguments and one that takes a single tuple of two arguments doesn't seem useful at all, at least from the standpoint of the types involves. All the rest, like named parameters or tuple labels, are just really about style and convenience, but isomorphic types, while not strictly equal (the very concept of "equal" is in fact a huge deal in abstract mathematics) are for all means "equivalent" for the world-modeler.<br class=""></div></div></blockquote></div><br class=""><div class="">Doesn’t seem useful?…</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><font face="Monaco" class="">let myFunc: (MyTypeAlias) -> Int = /* … */</font></div></blockquote><div class=""><br class=""></div><div class="">Does the function pointer have a single parameter? Or does it trigger Super-Secret Tuple-Destructing mode and actually indicate two parameters? My secret unknown single type should always be a single type, no matter what kind of type it is.</div><div class=""><br class=""></div><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">— </div><div class="">Daryle Walker<br class="">Mac, Internet, and Video Game Junkie<br class="">darylew AT mac DOT com </div><div class=""><br class=""></div></div></div></div></div></blockquote></div><br class=""></div></div></body></html>