http://dev.clojure.org/jira This file is an XML representation of an issue en-us 4.4 649 25-07-2011 http://dev.clojure.org/jira/browse/CLJ-1110 Clojure <p>The function clojure.core/let-&gt; is suboptimal in a few regards:<br/> 1. It's name lends you to believe it is "let-like", but it is not - it does not take a binding form, and its arguments are 'backwards'<br/> 2. It's docstring doesn't make clear that it is intended for use solely in a threading-macro expression<br/> 3. It arbitrarily does not support destructuring, where it easily could.</p> <p>Possible solutions:</p> <ul> <li>rename it (e.g. to "bind-&gt;") to make clear it is not let-like</li> <li>allow destructuring of the 'name' parameter</li> </ul> <p>Google groups discussion: <a href="https://groups.google.com/d/topic/clojure/67JQ7xSUOM4/discussion">https://groups.google.com/d/topic/clojure/67JQ7xSUOM4/discussion</a></p> CLJ-1110

let-> needs improvement

Enhancement Major Closed Completed Unassigned Alex Nixon Tue, 20 Nov 2012 09:08:00 -0600 Tue, 11 Dec 2012 01:03:39 -0600 Thu, 29 Nov 2012 08:08:45 -0600 Release 1.5 0 2 <p>Has it been decided whether as-&gt; supports de-structuring or not? Right now it is inconsistent.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">(as-&gt; [0 1] [a b] [(inc a) (inc b)]) =&gt; [1 2] (as-&gt; {:a 0 :b 1} {:keys [a b]} {:a (inc a) :b (inc b)}) =&gt; {:keys [1 2]}</pre> </div></div> <p>Also, what about changing the name to <del>&gt;as? -&gt;as reads like "pipeline as name", whereas as</del>&gt; implies that you are starting a new pipeline.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">(-&gt; 0 (-&gt;as name (...))</pre> </div></div> <p>Makes it clearer that you are consuming a pipeline and the expressions within -&gt;as are no longer being influenced by -&gt;.</p> <p>Has the addition of -&gt;&gt;as been considered? That way you can use it inside a -&gt;&gt; like this:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">(-&gt;&gt; a (-&gt;&gt;as name (...))) (-&gt; a (-&gt;as name (...)))</pre> </div></div> <p>The signature would be <span class="error">&#91;name forms init-expr&#93;</span>.</p> Approval Not Approved Global Rank