Difference between revisions of "Tally"

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Line 22: Line 22:
 
<p>For example,</p>
 
<p>For example,</p>
  
<apll>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢⍬<br />
+
<apll><pre>
0<br />
+
      ≢⍬
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢23<br />
+
0
1<br />
+
      ≢23
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢,23<br />
+
1
1<br />
+
      ≢,23
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢2 3 4⍴5 6<br />
+
1
2</apll>
+
      ≢2 3 4⍴5 6
 +
2</pre></apll>
  
 
<p>This symbol was suggested by the language designers of Dyalog APL.</p>
 
<p>This symbol was suggested by the language designers of Dyalog APL.</p>

Latest revision as of 23:23, 15 April 2018

Z←≢R returns an integer scalar identical to ⍬⍴(⍴R),1.
R is an arbitrary array.
Z is an integer scalar whose value is the number of items along the first coordinate of R.


For example,

      ≢⍬
0
      ≢23
1
      ≢,23
1
      ≢2 3 4⍴5 6
2

This symbol was suggested by the language designers of Dyalog APL.