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→High-rank arrays: APL2-style shape extension
(→Examples: Add APL2-style negative extension and reorganize) |
(→High-rank arrays: APL2-style shape extension) |
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=== High-rank arrays === | === High-rank arrays === | ||
Replicate works along a particular axis, which can be specified in languages with [[function axis]] and otherwise is the first axis for <source lang=apl inline>⌿</source>, and the last axis for <source lang=apl inline>/</source> (except in [[A+]], which uses <source lang=apl inline>/</source> for the [[Leading axis theory|first-axis]] form and has no last-axis form, and [[dzaima/APL]], which is similar but uses <source lang=apl inline>⌿</source>). | Replicate works along a particular [[axis]], which can be specified in languages with [[function axis]] and otherwise is the first axis for <source lang=apl inline>⌿</source>, and the last axis for <source lang=apl inline>/</source> (except in [[A+]], which uses <source lang=apl inline>/</source> for the [[Leading axis theory|first-axis]] form and has no last-axis form, and [[dzaima/APL]], which is similar but uses <source lang=apl inline>⌿</source>). | ||
<source lang=apl> | <source lang=apl> | ||
⊢A ← 4 6⍴⎕A | ⊢A ← 4 6⍴⎕A | ||
| Line 67: | Line 67: | ||
STUVWX | STUVWX | ||
</source> | </source> | ||
[[APL2]] further extends the [[singleton extension]] of the right argument, allowing it to have length 1 along the replication axis even if other axes have lengths not equal to 1. | |||
<source lang=apl> | |||
1 ¯2 3 / ⍪'abc' | |||
a aaa | |||
b bbb | |||
c ccc | |||
</source>{{Works in|[[APL2]], [[Dyalog APL]], [[APLX]], [[ngn/APL]], [[GNU APL]]}} | |||
== History == | == History == | ||