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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>The general idea of allowing this came from another thread that I started:</p>
<p><a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20161121/028985.html">[swift-evolution] [Discussion] Parameter ‘vector’ keyword vs. triple dot prefix for variadic generics</a></p>
<p>Another real world use case I could think of is to put numeric error codes inside an enum.</p>
<pre><code class="swift">enum TCPSocketErrorCode : String {
case `0` = "Success"
case `1` = "Operation not permitted"
case `2` = "No such file or directory"
case `3` = "No such process"
case `4` = "Interrupted system call"
case `5` = "Input/output error"
case `6` = "No such device or address"
…
}
</code></pre>
<p>Remember that you don’t have to provide the cases in order or incrementally. This should be a valid enum:</p>
<pre><code class="swift">enum Numbers {
case `42`
case `13`
}
</code></pre>
<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_1479923951540452864" 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 23. November 2016 um 01:35:01, Saagar Jha (<a href="mailto:saagar@saagarjha.com">saagar@saagarjha.com</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>
<title></title>
I'm curious about the use case for this. For tuples it's a
positional argument; how does this apply to enum cases which
shouldn't depend on their order?<br>
<div class="gmail_quote">
<div dir="ltr">On Tue, Nov 22, 2016 at 05:43 Adrian Zubarev 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 style="word-wrap:break-word" class="gmail_msg">
<div class="m_-5105016749911941513bloop_markdown gmail_msg">
<p class="gmail_msg">Have we already discussed this somewhere?</p>
<pre class="gmail_msg"><code class="m_-5105016749911941513swift gmail_msg">enum MyEnum {
case 0
case 1(String)
}
// or
enum MyEnum {
case `0`
case `1`(String)
}
let zero: MyEnum = .0
let one = MyEnum.1("Swift")
switch zero {
case .0:
print("zero")
case .1(let string)
print(string)
}
</code></pre>
<p class="gmail_msg">Tuples have this <code class="gmail_msg">.#</code> syntax, where the number is the index of the
tuple value. Can’t we allow this on enum cases as well?</p>
<hr class="gmail_msg">
<p class="gmail_msg">This is additive and something for phase 2,
but I’d like to know if we want to allow this?! :)</p>
<p class="gmail_msg"></p>
</div>
<div class="m_-5105016749911941513bloop_original_html gmail_msg">
<div id="m_-5105016749911941513bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto" class="gmail_msg"><br class="gmail_msg"></div>
<br class="gmail_msg">
<div id="m_-5105016749911941513bloop_sign_1479821328843589120" class="m_-5105016749911941513bloop_sign gmail_msg">
<div style="font-family:helvetica,arial;font-size:13px" class="gmail_msg">-- <br class="gmail_msg">
Adrian Zubarev<br class="gmail_msg">
Sent with Airmail</div>
</div>
</div>
<div class="m_-5105016749911941513bloop_markdown gmail_msg">
<p class="gmail_msg"></p>
</div>
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<a href="mailto:swift-evolution@swift.org" class="gmail_msg" target="_blank">swift-evolution@swift.org</a><br class="gmail_msg">
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</blockquote>
</div>
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