<div>I agree that it&#39;s very useful. I use it regularly. The documentation isn&#39;t that unclear, imo. To me, the underlying problem isn&#39;t enumerated. I think the underlying cause is that collections aren&#39;t indexed with zero based indices.if you don&#39;t understand this (which is the case for many experienced programmers new to Swift) it&#39;s hard to understand, and (too) easy to make a mistake.</div><div><br><div class="gmail_quote"><div>On Tue, 31 Jan 2017 at 17:41, Matthew Johnson via swift-evolution &lt;<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>&gt; 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="gmail_msg"><blockquote type="cite" class="gmail_msg"><div class="gmail_msg">On Jan 31, 2017, at 10:36 AM, Xiaodi Wu via swift-evolution &lt;<a href="mailto:swift-evolution@swift.org" class="gmail_msg" target="_blank">swift-evolution@swift.org</a>&gt; wrote:</div><br class="m_3720081916406269865Apple-interchange-newline gmail_msg"><div class="gmail_msg">I totally sympathize with users being confused. It&#39;s an interesting idea to move it to Array only.<br class="gmail_msg"><br class="gmail_msg">The thing is, it does make sense (and wouldn&#39;t be confusing) to enumerate a dictionary or set. Moreover, the behavior is _exactly_ what it says on the tin: when you enumerate something in real life, there is no sense in which the number is related to some sort of index. Can we fix this by documentation? Like, a big blaring &quot;don&#39;t use this when you want the index”?<br class="gmail_msg"></div></blockquote><div class="gmail_msg"><br class="gmail_msg"></div></div></div><div style="word-wrap:break-word" class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg">+1.  A similar method on collection that provides indices might be useful but that doesn’t mean we should remove `enumerated`.  User confusion should be addressed by documentation.</div></div></div><div style="word-wrap:break-word" class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"><blockquote type="cite" class="gmail_msg"><div class="gmail_msg"><div class="gmail_quote gmail_msg"><div class="gmail_msg">On Tue, Jan 31, 2017 at 09:35 Ole Begemann via swift-evolution &lt;<a href="mailto:swift-evolution@swift.org" class="gmail_msg" target="_blank">swift-evolution@swift.org</a>&gt; wrote:<br class="gmail_msg"></div><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 31/01/2017 16:19, Ole Begemann via swift-evolution wrote:<br class="gmail_msg">
&gt; Here are three previous discussion about this topic:<br class="gmail_msg">
&gt;<br class="gmail_msg">
&gt; 1) December 2015: [Idea] Add an (Index,    Element) sequence to<br class="gmail_msg">
&gt; CollectionType<br class="gmail_msg">
&gt; <a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151221/004561.html" rel="noreferrer" class="gmail_msg" target="_blank">https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151221/004561.html</a><br class="gmail_msg">
&gt; and<br class="gmail_msg">
&gt; <a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151228/004626.html" rel="noreferrer" class="gmail_msg" target="_blank">https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151228/004626.html</a><br class="gmail_msg">
&gt;<br class="gmail_msg">
&gt;<br class="gmail_msg">
&gt; 2) April 2016: [Idea] Replace enumerate() with something more explicit<br class="gmail_msg">
&gt; <a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160411/015074.html" rel="noreferrer" class="gmail_msg" target="_blank">https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160411/015074.html</a><br class="gmail_msg">
&gt;<br class="gmail_msg">
&gt;<br class="gmail_msg">
&gt; 3) September 2016: [Proposal draft] Introducing `indexed()`    collections<br class="gmail_msg">
&gt; <a href="https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160926/027355.html" rel="noreferrer" class="gmail_msg" target="_blank">https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160926/027355.html</a><br class="gmail_msg">
<br class="gmail_msg">
To clarify, the discussions I linked to don&#39;t all propose to remove or<br class="gmail_msg">
replace `enumerated()`, but they all talk about the potential confusion<br class="gmail_msg">
about what `enumerated()` does and does not do.<br class="gmail_msg">
<br class="gmail_msg">
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</blockquote></div>
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</blockquote></div></div><div dir="ltr">-- <br></div><div data-smartmail="gmail_signature">Sent from my phone</div>