Difference between revisions of "Tally"

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢2 3 4⍴5 6<br />
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;≢2 3 4⍴5 6<br />
 
2</apll>
 
2</apll>
 +
 +
<p>This symbol was suggested by the language designers of Dyalog APL.</p>

Revision as of 15:18, 26 May 2013

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.