+1 on adding a compile-time error directive. #error seems like the right syntax as well.<br>I had a maybe nit-picky comment about the proposal though. I think the example may not be ideal, since you could accomplish that compile-time error by annotating the method or class where that code lives with @available(tvOS) , no?<br><div class="gmail_quote"><div dir="ltr">On Sun, Jun 11, 2017 at 9:18 AM Will Field-Thompson via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">This is the best I've found for searching the archives: <a href="https://www.google.com/search?q=site%3Ahttps%3A%2F%2Flists.swift.org%2Fpipermail%2Fswift-evolution%2F+%22%23error%22" target="_blank">https://www.google.com/search?q=site%3Ahttps%3A%2F%2Flists.swift.org%2Fpipermail%2Fswift-evolution%2F+%22%23error%22</a><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Sun, Jun 11, 2017 at 11:30 AM Daryle Walker via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
> On Jun 10, 2017, at 2:00 PM, Xiaodi Wu <<a href="mailto:xiaodi.wu@gmail.com" target="_blank">xiaodi.wu@gmail.com</a>> wrote:<br>
><br>
> Daryle, there have been several pitches in the past with respect to #error, and very enlightening arguments both for and against the idea have been eloquently written.<br>
><br>
> Since you’re resurrecting this idea, could I suggest going back through the archives and linking to and summarizing these arguments, so that we’re not restarting the discussion from scratch? :)<br>
<br>
Is there somewhere to search the archives?<br>
<br>
—<br>
Daryle Walker<br>
Mac, Internet, and Video Game Junkie<br>
darylew AT mac DOT com<br>
<br>
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</blockquote></div><div dir="ltr">-- <br></div><div data-smartmail="gmail_signature"><div dir="ltr">Javier Soto</div></div>