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Depth (operator): Difference between revisions
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For left argument <syntaxhighlight lang=apl inline>⍺</syntaxhighlight> and right argument <syntaxhighlight lang=apl inline>⍵</syntaxhighlight>, | For left argument <syntaxhighlight lang=apl inline>⍺</syntaxhighlight> and right argument <syntaxhighlight lang=apl inline>⍵</syntaxhighlight>, | ||
<syntaxhighlight lang=apl> | <syntaxhighlight lang=apl> | ||
⍤ c ⍝ Depth-c | ⍤ c ⍝ Depth-c sub-arrays of ⍵ (monadic) or both arguments (dyadic) | ||
⍤ b c ⍝ Depth-b | ⍤ b c ⍝ Depth-b sub-arrays of ⍺ and depth-c sub-arrays of ⍵ (dyadic) | ||
⍤a b c ⍝ Depth-a | ⍤a b c ⍝ Depth-a sub-arrays of ⍵ (monadic), depth-b sub-arrays of ⍺ and depth-c sub-arrays of ⍵ (dyadic) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
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└──────────┴───┘ | └──────────┴───┘ | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Con[[catenate]] a constant prefix to each element: | Con[[catenate]] a constant prefix to each element: | ||
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Pair up the elements on the left with each element of each element on the right. | Pair up the elements on the left with each element of each element on the right. | ||
<syntaxhighlight lang=apl> | <syntaxhighlight lang=apl> | ||
'xy', | 'xy',⍥¯1⍥¯1⊢('ab' 'cd')('AB' 'CD') ⍝ equivalent to (⊂'xy'),¨¨('ab' 'cd')('AB' 'CD') | ||
┌─────────┬─────────┐ | ┌─────────┬─────────┐ | ||
│┌───┬───┐│┌───┬───┐│ | │┌───┬───┐│┌───┬───┐│ | ||
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=== Publications === | === Publications === | ||
* [[dfns workspace]]: [https://dfns.dyalog.com/n_Depth.htm Depth] | * [https://github.com/abrudz/primitives/blob/main/depth.aplo APL model] | ||
* [[dfns workspace]]: [https://dfns.dyalog.com/n_Depth.htm Depth] (this model does not correspond to the final design) | |||
{{APL built-ins}}[[Category:Primitive operators]] | {{APL built-ins}}[[Category:Primitive operators]] | ||