<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="">+1 for me too.<div class=""><br class=""></div><div class="">func login(username name: String, password: String) -> Bool<br class="">login(username: “bob”, password: “1234”)</div><div class=""><br class=""></div><div class="">It feels much more consistent and simpler.</div><div class=""><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jan 22, 2016, at 7:47 PM, David Owens II 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 style="font-family: Helvetica; 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;" class=""><blockquote type="cite" class=""><div class=""><br class="Apple-interchange-newline">On Jan 22, 2016, at 4:26 PM, Michael Wells 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="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><br class=""><blockquote type="cite" class=""><div class="gmail_extra"><div class="gmail_quote">On Sat, Jan 23, 2016 at 12:00 AM, David Owens II via swift-evolution<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:swift-evolution@swift.org" target="_blank" class="">swift-evolution@swift.org</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div class="" style="word-wrap: break-word;"><blockquote type="cite" class=""><div class=""><div class=""><b class="">Compensate For Weak Type Information as needed to clarify a parameter’s role.<br class=""></b></div><div class=""><br class=""></div>Especially when a parameter type is NSObject, Any, AnyObject, or a fundamental type such Int or String, type information and context at the point of use may not fully convey intent. In this example, the declaration may be clear, but the use site is vague:<br class=""><br class=""></div><blockquote class="" style="margin: 0px 0px 0px 40px; border: none; padding: 0px;"><div class=""><div class=""><font face="Menlo" class="">func add(observer: NSObject, for keyPath: String)</font></div></div><div class=""><div class=""><font face="Menlo" class="">grid.add(self, for: graphics) // vague</font></div></div></blockquote><div class=""><br class="">To restore clarity, precede each weakly-typed parameter with a noun describing its role:<br class=""><br class=""></div><blockquote class="" style="margin: 0px 0px 0px 40px; border: none; padding: 0px;"><div class=""><font face="Menlo" class="">func addObserver(_ observer: NSObject, forKeyPath path: String)</font></div><div class=""><div class=""><font face="Menlo" class="">grid.addObserver(self, forKeyPath: graphics) // clear</font></div></div></blockquote></blockquote><div class=""><br class=""></div></div></blockquote></div></div></blockquote><br class="">Where this rule feels clumsy to me is in code such as<br class=""><br class=""><font face="Menlo" class="">func loginWithUsername(username: String, password: String) -> Bool</font><br class=""><br class="">vs.<br class=""><br class=""><font face="Menlo" class="">func login(username: String, password: String) -> Bool<br class=""></font><br class="">But maybe it just takes some time to get used to the style.</div></div></div></blockquote><div class=""><br class=""></div><div class=""><br class=""></div></div><span style="font-family: Helvetica; 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="">I much prefer the second version:</span><div class="" style="font-family: Helvetica; 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;"><br class=""></div><blockquote class="" style="font-family: Helvetica; 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; margin: 0px 0px 0px 40px; border: none; padding: 0px;"><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><font face="Menlo" class="">Guess everything is ok now... </font></div><div class=""><font face="Menlo" class="">login(username: “bob”, password: “1234”)</font></div><div class=""><font face="Menlo" class=""><span class="" style="font-family: Helvetica;"><br class=""></span></font></div></div></div></blockquote><div class="" style="font-family: Helvetica; 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; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><font class="">-David</font></div></div><span style="font-family: Helvetica; font-size: 12px; 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