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.error { color:#AA0000; }</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="bloop_markdown"><p>Could you elaborate an implementation for one of these functions:</p>
<pre><code class="swift">func == <T>(left: T?, right: Nil)
…
</code></pre>
<p>I’m a little confused how these would work, because the types are different and the optional is either <code>.none</code> or <code>.some(T)</code> of type <code>Optional<T></code> where the other side is <code>Nil</code>.</p>
<p></p></div><div class="bloop_original_html"><style>body{font-family:Helvetica,Arial;font-size:13px}</style><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <br> <div id="bloop_sign_1478639376463813120" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">-- <br>Adrian Zubarev<br>Sent with Airmail</div></div> <br><p class="airmail_on">Am 8. November 2016 um 22:07:53, Anton Zhilin (<a href="mailto:antonyzhilin@gmail.com">antonyzhilin@gmail.com</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>
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<p style="margin:0px 0px 1.2em!important">2016-11-08 23:53
GMT+03:00 Pyry Jahkola <<a href="mailto:pyry.jahkola@iki.fi" target="_blank">pyry.jahkola@iki.fi</a>>:</p>
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<div>Then why not just:<br></div>
<div><br></div>
<div> public protocol ExpressibleByIntLiteral {</div>
<div> static var `nil`: Self</div>
<div> }</div>
<div><br></div>
<div>…such that Foo.nil creates your nil value of type Foo?</div>
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<p style="margin:0px 0px 1.2em!important"></p>
<p style="margin:0px 0px 1.2em!important">This proposal is not
about creating an alternate syntax for <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">
nil as Optional<Foo></code>. It’s about granting <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">
nil</code> literal its own type:</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 class="hljs language-swift" 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;display:block;overflow-x:auto;padding:0.5em;color:rgb(51,51,51);background:rgb(248,248,248)"><span class="hljs-keyword" style="color:rgb(51,51,51);font-weight:bold">let</span> a = <span class="hljs-built_in" style="color:rgb(0,134,179)">nil</span>
<span class="hljs-built_in" style="color:rgb(0,134,179)">print</span>(type(of: a)) <span class="hljs-comment" style="color:rgb(153,153,136);font-style:italic">//=> Nil</span>
</code></pre>
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