<div dir="ltr"><div class="markdown-here-wrapper" style=""><p style="margin:0px 0px 1.2em!important">With <a href="https://github.com/thoughtbot/Runes">Runes</a>, this looks like:</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important">(name1 <^> { "\"\($0)\"" }) ?? "null"
</code></pre><p style="margin:0px 0px 1.2em!important">Runes defines <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline"><^></code> to have lower precedence than <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">??</code>. Sadly, they all can’t be in the same precedence group due to right associativity of <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">??</code>.</p>
<p style="margin:0px 0px 1.2em!important">2017-02-08 18:11 GMT+03:00 Tony Allevato via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>>:</p>
<p style="margin:0px 0px 1.2em!important"></p><div class="markdown-here-exclude"><p></p><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">What you're asking for is already possible (avoiding the optional unwrap) by combining map() on Optional with ??:<div><br></div><div>```</div><div><div>let name1: String? = "name"</div><div>print(name1.map { "\"\($0)\"" } ?? "null") // prints "\"name\""</div><div><br></div><div>let name2: String? = nil</div><div>print(name2.map { "\"\($0)\"" } ?? "null") // prints "null"</div><div>```</div><div><br></div><div>So I guess the question is, does simplifying that rise to the level of wanting a custom operator? I personally don't think it does, but I could see an argument being made that an operator with defined semantics might be a small amount clearer than map + ??. But I think the benefits would have to be very strong, though.</div><div><br></div><div>And as other folks have mentioned, having "!" in the operator name is somewhat misleading, since when I see that I expect a trap to occur in nil cases.</div></div></div></blockquote><p></p></div><p style="margin:0px 0px 1.2em!important"></p>
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