<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Yeah! I’m working on a formal proposal that would solve the same problem. Jordan, the problem he described is exactly like the one you explained to me, haha. Now I’m a bit confused about how the proposal should be called. Have any suggestions? What title could fit the two use cases we mentioned. By the way, can you see any other use case that would be solved with the same solution?<div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jun 20, 2016, at 9:25 PM, Jordan Rose <<a href="mailto:jordan_rose@apple.com" class="">jordan_rose@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">I've been encouraging Paulo Faria to mention this case in his push for a way to disambiguate extension methods, with the thought being we could then use the same syntax to differentiate top-level names as well.</div><div class=""><br class=""></div><div class="">I'd also be happy with the "import as" syntax. The underscore syntax seems a little opaque, but I suppose it wouldn't come up very often.</div><div class=""><br class=""></div><div class="">Jordan</div><div class=""><br class=""></div><br class=""><div class=""><blockquote type="cite" class=""><div class="">On Jun 17, 2016, at 19:52, Félix Cloutier via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hello all,<div class=""><br class=""></div><span class="">I recently </span><a href="http://stackoverflow.com/q/37892621/251153" class="">ran into a bug</a><span class=""> that leaves me unable to fully-qualify the name of a type. If you import a module named Foo that also contains a type named Foo, attempts to fully-qualify any name in the Foo module will instead attempt to find something inside the Foo type. This bug has </span><a href="https://bugs.swift.org/browse/SR-898" class="">already been reported</a><span class="">.<br class=""></span><div class=""><br class=""></div><div class="">Here's an example with Károly Lőrentey's BTree module (which also contains a BTree type) that I encountered while trying to use the OrderedSet type:</div><div class=""><br class=""></div><div class=""><pre class="default prettyprinted prettyprint" style="margin-top: 0px; padding: 5px; border: 0px; font-size: 13px; width: auto; max-height: 600px; overflow: auto; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; background-color: rgb(239, 240, 241); color: rgb(57, 51, 24); word-wrap: normal;"><code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;" class=""><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(16, 16, 148);">let</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(16, 16, 148);">set</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">=</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">OrderedSet</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"><</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Int</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">>()</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">
</span><span class="com" style="margin: 0px; padding: 0px; border: 0px; color: rgb(133, 140, 147);">// error: 'OrderedSet' is ambiguous for type lookup in this context</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">
</span><span class="com" style="margin: 0px; padding: 0px; border: 0px; color: rgb(133, 140, 147);">// Found this candidate: Foundation.OrderedSet:3:14</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">
</span><span class="com" style="margin: 0px; padding: 0px; border: 0px; color: rgb(133, 140, 147);">// Found this candidate: BTree.OrderedSet:12:15</span></code></pre><div class="">To solve this, you would normally write BTree.OrderedSet, but now Swift thinks that BTree is the BTree type, not the BTree module:</div><div class=""><br class=""></div><div class=""><pre class="default prettyprinted prettyprint" style="margin-top: 0px; padding: 5px; border: 0px; font-size: 13px; width: auto; max-height: 600px; overflow: auto; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; background-color: rgb(239, 240, 241); color: rgb(57, 51, 24); word-wrap: normal;"><code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;" class=""><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(16, 16, 148);">let</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(16, 16, 148);">set</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">=</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">BTree</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">OrderedSet</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);"><</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Int</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">>()</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(48, 51, 54);">
</span><span class="com" style="margin: 0px; padding: 0px; border: 0px; color: rgb(133, 140, 147);">// error: reference to generic type 'BTree' requires arguments in <...></span></code></pre><div class="">Any fix will require a change to the language, and as Jordan Rose stated on the bug, it "needs design", so I would like to bring up the issue and discuss possible solutions.</div></div><div class=""><br class=""></div><div class="">I can see several options (leaving "do nothing" aside, since I believe that this needs to be resolved):</div><div class=""><br class=""></div><div class=""><ul class="MailOutline"><li class="">Prevent modules from containing a type with the same name</li><li class="">Allow modules to be imported under different names (`import BTree as BTreeModule`, `import BTreeModule = BTree` or any similar syntax)</li><li class="">Create a new syntax that indicates that you're naming a module, not a type (like `_.BTree.OrderedSet`)</li></ul><div class=""><br class=""></div></div><div class="">Thoughts?</div><div class="">
<br class="Apple-interchange-newline"><span style="font-family: 'Lucida Grande'; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Félix</span>
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