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→Properties
(Created page with "{{Built-in|Table|⍪}}, or '''Ravel Items''', is a monadic primitive function which returns a matrix formed by applying Ravel to each major cell of the giv...") |
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== Examples == | == Examples == | ||
For arrays of [[rank]] 1 or higher, the result is identical to applying Ravel to major cells | For arrays of [[rank]] 1 or higher, the result is identical to applying Ravel to major cells: | ||
<source lang=apl> | <source lang=apl> | ||
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Table preserves the array's [[Tally]] (the number of major cells). | Table preserves the array's [[Tally]] (the number of major cells). | ||
Table is equivalent to [[reshape|reshaping]] with the shape where all trailing axis lengths have been replaced by their [[product]] or, alternatively, the tally concatenated to the [[bound]] divided by the tally: | |||
<source lang=apl> | |||
⍪2 3 4 2⍴⎕A | |||
ABCDEFGHIJKLMNOPQRSTUVWX | |||
YZABCDEFGHIJKLMNOPQRSTUV | |||
{⍵⍴⍨(≢⍵),(×/⍴⍵)÷≢⍵}2 3 4 2⍴⎕A | |||
ABCDEFGHIJKLMNOPQRSTUVWX | |||
YZABCDEFGHIJKLMNOPQRSTUV | |||
{⍵⍴⍨(1↑⍴⍵),(×/1↓⍴⍵)}2 3 4 2⍴⎕A | |||
ABCDEFGHIJKLMNOPQRSTUVWX | |||
YZABCDEFGHIJKLMNOPQRSTUV | |||
</source> | |||
In languages where the [[Rank (operator)|Rank operator]] is available, Table is equivalent to <source lang=apl inline>,⍤¯1</source>: | |||
<source lang=apl> | |||
(,⍤¯1)2 3 4 2⍴⎕A | |||
ABCDEFGHIJKLMNOPQRSTUVWX | |||
YZABCDEFGHIJKLMNOPQRSTUV | |||
</source> | |||
In languages where [[function axis]] is available, Table is equivalent to <source lang=apl inline>,[1↓⍳≢⍴Y]</source>: | |||
<source lang=apl> | |||
{,[1↓⍳≢⍴⍵]⍵}2 3 4 2⍴⎕A | |||
ABCDEFGHIJKLMNOPQRSTUVWX | |||
YZABCDEFGHIJKLMNOPQRSTUV | |||
</source> | |||
== External links == | == External links == | ||