<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="">On Apr 6, 2016, at 2:03 PM, Joe Groff via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class=""><blockquote type="cite" style="font-family: Palatino-Roman; font-size: 14px; font-style: normal; font-variant-caps: 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;" class=""><br class="Apple-interchange-newline">On Apr 6, 2016, at 12:52 PM, Pyry Jahkola <<a href="mailto:pyry.jahkola@iki.fi" class="">pyry.jahkola@iki.fi</a>> wrote:<br class=""><br class="">Joe,<br class=""><br class="">Just from your experience on this topic, is there any reason not to also move the primary constraints into the trailing `where` clause?<br class=""></blockquote><span style="font-family: Palatino-Roman; font-size: 14px; font-style: normal; font-variant-caps: 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="">It's a judgment call. It's my feeling that in many cases, a generic parameter is constrained by at least one important protocol or base class that's worth calling out up front, so it's reasonable to allow things like 'func foo<C: Collection>(x: C) -> C.Element' without banishing the 'Collection' constraint too far from the front of the declaration.</span><br style="font-family: Palatino-Roman; font-size: 14px; font-style: normal; font-variant-caps: 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;" class=""></div></blockquote></div><br class=""><div class="">From a reading point of view, it's always better to declare tokens before using them. This groups them with the parameters (and the parameters in turn may use the tokens), so the scope-specific vocabulary is all laid out in front.</div><div class=""><br class=""></div><div class="">-- E</div><div class=""><br class=""></div></body></html>