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clojure/print_object/remove_extraneous.html

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 <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
 
 <meta name="author" content="Timothy Pratley">
-<meta name="dcterms.date" content="2025-06-05">
+<meta name="dcterms.date" content="2025-05-26">
 
 <title>Clean object printing by removing extraneous – Clojure Civitas</title>
 <style>
@@ -371,7 +371,7 @@ <h1 class="title">Clean object printing by removing extraneous</h1>
     <div>
     <div class="quarto-title-meta-heading">Published</div>
     <div class="quarto-title-meta-contents">
-      <p class="date">June 5, 2025</p>
+      <p class="date">May 26, 2025</p>
     </div>
   </div>
 
@@ -401,20 +401,20 @@ <h1 class="title">Clean object printing by removing extraneous</h1>
 <span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a>  (<span class="va">#'clojure.core/print-object</span> x w))</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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-<div class="sourceCode" id="cb2"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.lang.MultiFn <span class="bn">0x4ad1ca85</span> <span class="st">"clojure.lang.MultiFn@4ad1ca85"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb2"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.lang.MultiFn <span class="bn">0x3c1a6d8c</span> <span class="st">"clojure.lang.MultiFn@3c1a6d8c"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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 <div class="sourceCode" id="cb3"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a>(Object.)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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 <div class="printedClojure">
-<div class="sourceCode" id="cb4"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a>#object[java.lang.Object <span class="bn">0x77092597</span> <span class="st">"java.lang.Object@77092597"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb4"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a>#object[java.lang.Object <span class="bn">0x1e98ee48</span> <span class="st">"java.lang.Object@1e98ee48"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 </div>
 <p>The syntax is <code>#object[CLASS-NAME HASH toString())]</code> and as you can see, the toString of an Object is <code>CLASS-NAME@HASH</code>. For most objects this becomes quite a long string.</p>
 <div class="sourceClojure">
 <div class="sourceCode" id="cb5"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a>(async/chan)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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-<div class="sourceCode" id="cb6"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.core.async.impl.channels.ManyToManyChannel <span class="bn">0x3c556542</span> <span class="st">"clojure.core.async.impl.channels.ManyToManyChannel@3c556542"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb6"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.core.async.impl.channels.ManyToManyChannel <span class="bn">0x4a6ed38</span> <span class="st">"clojure.core.async.impl.channels.ManyToManyChannel@4a6ed38"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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 <div class="quarto-figure quarto-figure-center">
 <figure class="figure">
@@ -427,14 +427,14 @@ <h1 class="title">Clean object printing by removing extraneous</h1>
 <div class="sourceCode" id="cb7"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a>(<span class="kw">fn</span> [x] x)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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-<div class="sourceCode" id="cb8"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.print_object.remove_extraneous$eval22436$fn__22437 <span class="bn">0x7eecccfb</span> <span class="st">"clojure.print_object.remove_extraneous$eval22436$fn__22437@7eecccfb"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb8"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.print_object.remove_extraneous$eval22436$fn__22437 <span class="bn">0x3e871f3</span> <span class="st">"clojure.print_object.remove_extraneous$eval22436$fn__22437@3e871f3"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 </div>
 <p>It’s quite easy to miss the fact that it is a function as we are looking for a tiny little <code>fn</code> in a sea of text. If, like me, you are fond of the <a href="../../code_interview/beating/with_stupid_stuff/z_combinator_gambit.html">odd lambda calculus excursion</a>, things get even more hectic.</p>
 <div class="sourceClojure">
 <div class="sourceCode" id="cb9"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a>((<span class="kw">fn</span> [x] (<span class="kw">fn</span> [v] ((x x) v))) (<span class="kw">fn</span> [y] y))</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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 <div class="printedClojure">
-<div class="sourceCode" id="cb10"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.print_object.remove_extraneous$eval22440$fn__22441$fn__22442 <span class="bn">0x3381297e</span> <span class="st">"clojure.print_object.remove_extraneous$eval22440$fn__22441$fn__22442@3381297e"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb10"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.print_object.remove_extraneous$eval22440$fn__22441$fn__22442 <span class="bn">0x18faa963</span> <span class="st">"clojure.print_object.remove_extraneous$eval22440$fn__22441$fn__22442@18faa963"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 </div>
 <p>Yikes! what an eyesore. This is not an academic issue specific to lambda calculus. Any function created from inside a function is helpfully identifiable through the <code>fn$fn</code> nesting. We create these quite regularly, and they are often printed in stack traces. I’m sure you have seen them when you map an inline function across a seq, and there is a bug in the anonymous function.</p>
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clojure/transducers/what_if.html

@@ -519,7 +519,7 @@ <h1 class="title">What if… we were taught transducers first?</h1>
 <div class="sourceCode" id="cb35"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb35-1"><a href="#cb35-1" aria-hidden="true" tabindex="-1"></a>(<span class="kw">comp</span> (<span class="kw">filter</span> <span class="kw">even?</span>) (<span class="kw">map</span> <span class="kw">inc</span>))</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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-<div class="sourceCode" id="cb36"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb36-1"><a href="#cb36-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.core$comp$fn__5895 <span class="bn">0x5c991516</span> <span class="st">"clojure.core$comp$fn__5895@5c991516"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
+<div class="sourceCode" id="cb36"><pre class="sourceCode clojure code-with-copy"><code class="sourceCode clojure"><span id="cb36-1"><a href="#cb36-1" aria-hidden="true" tabindex="-1"></a>#object[clojure.core$comp$fn__5895 <span class="bn">0x7a01358f</span> <span class="st">"clojure.core$comp$fn__5895@7a01358f"</span>]</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
 </div>
 <p>Let’s give this a name:</p>
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posts.html

@@ -417,32 +417,7 @@ <h1 class="title">Posts</h1>
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-<div class="thumbnail"><a href="./clojure/print_object/remove_extraneous.html" class="no-external">
-
-<p class="card-img-top"><img src="clojure/print_object/objection.jpg"  class="thumbnail-image card-img"/></p>
-
-</a></div>
-<div class="body">
-<h3 class="no-anchor listing-title">
-<a href="./clojure/print_object/remove_extraneous.html" class="no-external">Clean object printing by removing extraneous</a>
-</h3>
-<div class="delink listing-description"><a href="./clojure/print_object/remove_extraneous.html" class="no-external">
-The Clojure default for printing objects is noisy. Clojure’s <code>print-method</code> for <code>Object</code> delegates to <code>clojure.core/print-object</code>
-</a></div>
-</div>
-<div class="metadata">
-<a href="./clojure/print_object/remove_extraneous.html" class="no-external">
-<div class="listing-date">
-Jun 5, 2025
-</div>
-<div class="listing-author">
-Timothy Pratley
-</div>
-</a>
-</div>
-</div>
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+<div class="thumbnail"><a href="./clojure/print_object/remove_extraneous.html" class="no-external">
+
+<p class="card-img-top"><img src="clojure/print_object/objection.jpg"  class="thumbnail-image card-img"/></p>
+
+</a></div>
+<div class="body">
+<h3 class="no-anchor listing-title">
+<a href="./clojure/print_object/remove_extraneous.html" class="no-external">Clean object printing by removing extraneous</a>
+</h3>
+<div class="delink listing-description"><a href="./clojure/print_object/remove_extraneous.html" class="no-external">
+The Clojure default for printing objects is noisy. Clojure’s <code>print-method</code> for <code>Object</code> delegates to <code>clojure.core/print-object</code>
+</a></div>
+</div>
+<div class="metadata">
+<a href="./clojure/print_object/remove_extraneous.html" class="no-external">
+<div class="listing-date">
+May 26, 2025
+</div>
+<div class="listing-author">
+Timothy Pratley
+</div>
+</a>
+</div>
+</div>
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