<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=""><br class=""><div><blockquote type="cite" class=""><div class="">On Dec 11, 2015, at 9:01 PM, Joe Groff &lt;<a href="mailto:jgroff@apple.com" class="">jgroff@apple.com</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">with its Product type generalized to Any.<span class="Apple-converted-space">&nbsp;</span></span></div></blockquote></div><br class=""><div class=""><br class=""></div><div class="">In the alternate example</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class="">protocol&nbsp;Factory {</div><div class="">&nbsp; &nbsp;&nbsp;typealias&nbsp;Product: ProductProtocol</div><div class="">&nbsp; &nbsp;&nbsp;func&nbsp;make() -&gt;&nbsp;Product</div><div class="">&nbsp; &nbsp;&nbsp;var&nbsp;description :&nbsp;String&nbsp;{&nbsp;get&nbsp;}</div><div class="">}</div></blockquote><br class=""><div class="">would it generalize to ProductProtocol (e.g. not Any)?</div><div class=""><br class=""></div><div class="">That is potentially a good solution, especially if compatible with existing Swift 3 work.</div></body></html>