docs/help/suffixes_drop.html


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  <title>BQN: Down Arrow (↓)</title>
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<h1 id="down-arrow-"><a class="header" href="#down-arrow-">Down Arrow (<code><span class='Function'>↓</span></code>)</a></h1>
<h2 id="-𝕩-suffixes"><a class="header" href="#-𝕩-suffixes"><code><span class='Function'>↓</span> <span class='Value'>𝕩</span></code>: Suffixes</a></h2>
<p><a class="fulldoc" href="../doc/prefixes.html">→full documentation</a></p>
<p>Suffixes of array <code><span class='Value'>𝕩</span></code> along its first axis.</p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=4oaTIDHigL8y4oC/M+KAvzQKCmEg4oaQIDPigL8zIOKliiDihpU5CgrihpMgYQ==">↗️</a><pre>    <span class='Function'>↓</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='Ligature'>‿</span><span class='Number'>4</span>
⟨ ⟨ 1 2 3 4 ⟩ ⟨ 2 3 4 ⟩ ⟨ 3 4 ⟩ ⟨ 4 ⟩ ⟨⟩ ⟩

    <span class='Value'>a</span> <span class='Gets'>←</span> <span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>3</span> <span class='Function'>⥊</span> <span class='Function'>↕</span><span class='Number'>9</span>

    <span class='Function'>↓</span> <span class='Value'>a</span>
┌─                                    
· ┌─        ┌─        ┌─        ↕0‿3  
  ╵ 0 1 2   ╵ 3 4 5   ╵ 6 7 8         
    3 4 5     6 7 8           ┘       
    6 7 8           ┘                 
          ┘                           
                                     ┘
</pre>
<h2 id="𝕨--𝕩-drop"><a class="header" href="#𝕨--𝕩-drop"><code><span class='Value'>𝕨</span> <span class='Function'>↓</span> <span class='Value'>𝕩</span></code>: Drop</a></h2>
<p><a class="fulldoc" href="../doc/take.html">→full documentation</a></p>
<p>For each integer in <code><span class='Value'>𝕨</span></code>, drop that many elements from the beginning of each dimension of <code><span class='Value'>𝕩</span></code>.</p>
<p>Negative numbers drop from the end.</p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=MyDihpMgMeKAvzPigL814oC/NjcKCmIg4oaQIDTigL80IOKliiDihpUxNgoKM+KAvzMg4oaTIGIKCjXigL81IOKGkyBiCgoKM+KAv8KvMyDihpMgYg==">↗️</a><pre>    <span class='Number'>3</span> <span class='Function'>↓</span> <span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>67</span>
⟨ 67 ⟩

    <span class='Value'>b</span> <span class='Gets'>←</span> <span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>4</span> <span class='Function'>⥊</span> <span class='Function'>↕</span><span class='Number'>16</span>

    <span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>3</span> <span class='Function'>↓</span> <span class='Value'>b</span>
┌─    
╵ 15  
     ┘

    <span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>5</span> <span class='Function'>↓</span> <span class='Value'>b</span>
┌┐
└┘


    <span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>¯3</span> <span class='Function'>↓</span> <span class='Value'>b</span>
┌─    
╵ 12  
     ┘
</pre>