docs/help/gradedown_binsdown.html


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  <title>BQN: Del Stile (⍒)</title>
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<h1 id="del-stile-"><a class="header" href="#del-stile-">Del Stile (<code><span class='Function'>⍒</span></code>)</a></h1>
<h2 id="-𝕩-grade-down"><a class="header" href="#-𝕩-grade-down"><code><span class='Function'>⍒</span> <span class='Value'>𝕩</span></code>: Grade Down</a></h2>
<p>Indices of <code><span class='Value'>𝕩</span></code> that would sort its major cells in descending order.</p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=ICAgYSDihpAgMeKAvzLigL8zCgogICDijZIgYQoKICAgKOKNkmEpIOKKjyBh">↗️</a><pre>       <span class='Value'>a</span> <span class='Gets'>←</span> <span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>3</span>

       <span class='Function'>⍒</span> <span class='Value'>a</span>
⟨ 2 1 0 ⟩

       <span class='Paren'>(</span><span class='Function'>⍒</span><span class='Value'>a</span><span class='Paren'>)</span> <span class='Function'>⊏</span> <span class='Value'>a</span>
⟨ 3 2 1 ⟩
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<h2 id="𝕨--𝕩-bins-down"><a class="header" href="#𝕨--𝕩-bins-down"><code><span class='Value'>𝕨</span> <span class='Function'>⍒</span> <span class='Value'>𝕩</span></code>: Bins Down</a></h2>
<p>Binary search for each element of <code><span class='Value'>𝕩</span></code> in <code><span class='Value'>𝕨</span></code>, and return the index found, if any.</p>
<p><code><span class='Value'>𝕨</span></code> must be sorted in descending order.</p>
<p><a href="../doc/arithmetic.html#pervasion">Right Pervasive.</a></p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=ICAgN+KAvzXigL804oC/MyDijZIgMgoKICAgN+KAvzXigL804oC/MyDijZIgMuKAvzY=">↗️</a><pre>       <span class='Number'>7</span><span class='Ligature'>‿</span><span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>3</span> <span class='Function'>⍒</span> <span class='Number'>2</span>
┌·   
· 4  
    ┘

       <span class='Number'>7</span><span class='Ligature'>‿</span><span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>3</span> <span class='Function'>⍒</span> <span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>6</span>
⟨ 4 1 ⟩
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