<div dir="ltr">Seems totally fair to add if someone wants to devote the time and effort to implement it, but also easily worked around for the moment and therefore (IMO) not a pressing issue.<div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jan 29, 2017 at 3:03 PM, Matt Whiteside via swift-evolution <span dir="ltr"><<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>In Swift 3.1, I was happy to see that we can now extend types with concrete constraints. I think one other feature which fits nicely with this new capability would be extending typealiases, like this:</div><div><br></div><div><b><font face="FiraMono-Regular">typealias Vector = Array<Float></font></b></div><div><b><font face="FiraMono-Regular"><br></font></b></div><div><b><font face="FiraMono-Regular">extension Vector {</font></b><b><font face="FiraMono-Regular"> </font></b></div><div><b><font face="FiraMono-Regular"> ...</font></b></div><div><b><font face="FiraMono-Regular">}</font></b></div><div><b><br></b></div><div>Which currently doesn't compile due to: "Constrained extension must be declared on the unspecialized generic type 'Array' with constraints specified by a 'where’ clause”</div><div><br></div><div>What is other people’s interest level? How possible would it be to add this?</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>-Matt</div><div><br></div><div><br></div><div><br></div></font></span></div><br>______________________________<wbr>_________________<br>
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