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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>Eliminating all labels would mean that even the first example from my last post will be banned. </p>
<p>Is there any difference from labels in tuple types and labels in tuples themselves?</p>
<p>Personally I would not support the removal of labels from tuple types, because it’s a very useful feature that replaces indexed access like <code>myTuple.1</code> to a more readable counterpart <code>myTuple.somethingSpecial</code>. </p>
<p>Am I still missing something out?</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_1493963146083270144" 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 5. Mai 2017 um 07:43:49, Xiaodi Wu (<a href="mailto:xiaodi.wu@gmail.com">xiaodi.wu@gmail.com</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>
<title></title>
<div dir="ltr">On Fri, May 5, 2017 at 12:42 AM, Adrian Zubarev via
swift-evolution <span dir="ltr"><<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>></span> wrote:<br>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Okay now I see where this is going. So basically you want to
mirror the behavior of function parameters into tuples.</p>
<p>You might want to be a little bit more explicit on types in your
proposal to better understand the so called ‘tuple shuffle’.</p>
<pre><code class="m_-1319762173201981654swift">let a: (x: Int, y: Int) = (x: 1, y: 2)
var b: (y: Int, x: Int) = a
a.x == b.x
a.y == b.y
</code></pre>
<p>Label swap (tuple shuffle) while destructuring:</p>
<pre><code class="m_-1319762173201981654swift">let tuple: (first: Int, second: (x: Int, y: Int)) = (first: 0, second: (x: 1, y: 2))
let (first: a, second: (x: b, y: c)): (first: Int, second: (x: Int, y: Int)) = tuple // fine, unaffected
let (second: (x: b, y: c), first: a): (second: (x: Int, y: Int), first: Int) = tuple // shuffle => error</code></pre></div>
</div>
</blockquote>
<div><br></div>
<div>No, I thought this was what Robert was proposing, but he is
proposing the elimination of all labels in tuple patterns. Your
second example would be banned.</div>
<div><br></div>
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