<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=""><div class="">This arises a different question: Should `description` always return the same value? For example: Can `description` of “May 31th, 2016” return “Today” if we evaluate it today and return “Yesterday” if we evaluate it tomorrow? Are such side-effects (using a volatile global value) permitted? Then how about localization? Can description be locale-aware without breaking the protocol?&nbsp;</div><br class=""><div><blockquote type="cite" class=""><div class="">On May 31, 2016, at 3:43 PM, Austin Zheng via swift-evolution &lt;<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">My original v2 proposal draft suggested making value preserving and human readable descriptions orthogonal, but Chris and a few other people suggested they liked the originally suggested design better. I have a link in the "Alternatives" section to that original draft.<div class=""><br class=""></div><div class="">Austin</div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Tue, May 31, 2016 at 3:22 PM, Dave Abrahams via swift-evolution <span dir="ltr" class="">&lt;<a href="mailto:swift-evolution@swift.org" target="_blank" class="">swift-evolution@swift.org</a>&gt;</span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br class="">
on Tue May 31 2016, Thorsten Seitz &lt;<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>&gt; wrote:<br class="">
<br class="">
&gt; I agree with Vladimir. Having a value preserving representation is<br class="">
&gt; orthogonal to a human readable representation.<br class="">
<br class="">
</span>I too think he's making a good point.&nbsp; I could be missing something, but<br class="">
it seems to me we don't fully understand this design yet.<br class="">
<span class="HOEnZb"><font color="#888888" class=""><br class="">
--<br class="">
Dave<br class="">
</font></span><div class="HOEnZb"><div class="h5"><br class="">
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