<div dir="ltr"><div class="gmail_extra"><div><div class="gmail_signature"><div dir="ltr"><div>On Tue, Apr 19, 2016 at 3:29 PM, Dave Abrahams via swift-evolution <span dir="ltr"><<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>></span> wrote:<br></div></div></div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span class=""><br>
on Tue Apr 19 2016, Alan Skipp <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br>
<br>
> I’d place the ability to omit parenthesises for single args in the same category<br>
> as being able to omit `self` when accessing properties. They are small<br>
> conveniences that make a large difference to an entire codebase.<br>
<br>
</span>Care to back that up with some measurements? Take one of your projects<br>
and find the instances of “[^) ] *->”<br>
<br>
How many places in the code are affected, and how much worse is the result?<br></blockquote><div><br></div>Here's one data point: including a small handful of false positives, I found 74 results in a project with 33 Swift files.</div><div class="gmail_quote"><br></div><div class="gmail_quote">"How much worse" is hard to answer. It certainly wouldn't be the worst thing in the world to add parens, but I'm not particularly compelled by the pro-() arguments in this thread.<div class="gmail_extra"><br clear="all"></div><div>Jacob</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<span class="im"><br>
> On 19 Apr 2016, at 15:49, Erica Sadun via swift-evolution<br>
> <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br>
><br>
> Apart from intuition and confusion, parentheses are used at call sites<br>
> and declarations. It seems out of line that they can be removed in types<br>
> but only in one degenerate case.<br>
><br>
> This goes against the Swift core design goal of consistency.<br>
><br>
> -- E<br>
><br>
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<br>
--<br>
Dave<br>
<br>
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