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Reference for catenate over enclose in 1981
(Created page with "{{Built-in|Pair|⍮}} is a primitive function equivalent to the dfn <source lang=apl inline>{⍺←,⊂ ⋄ ⍺ ⍵}</source> which aids in constructing nested arrays...") |
(Reference for catenate over enclose in 1981) |
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{{Built-in|Pair|⍮}} is a [[primitive function]] equivalent to the [[dfn]] <source lang=apl inline>{⍺←,⊂ ⋄ ⍺ ⍵}</source> which aids in constructing nested arrays during [[tacit programming]] where [[stranding]] by juxtaposition is not available. It is also equivalent to <source lang=apl inline>,⍥⊂</source> using the [[Over operator]] or <source lang=apl inline>,⍨∘⊂⍨∘⊂</source> using only traditional operators. It was introduced in [[Extended Dyalog APL]], and then adopted into [[dzaima/APL]]. | {{Built-in|Pair|⍮}} or '''Juxtapose''' is a [[primitive function]] equivalent to the [[dfn]] <source lang=apl inline>{⍺←,⊂ ⋄ ⍺ ⍵}</source> which aids in constructing nested arrays during [[tacit programming]] where [[stranding]] by juxtaposition is not available. It is also equivalent to the [[catenate|catenation]] of the [[enclose]]d arguments; <source lang=apl inline>,⍥⊂</source> using the [[Over]] [[operator]]<ref>[https://www.jsoftware.com/papers/satn41.htm "Composition and Enclosure"] § | ||
Composition Operators. SATN-41, 1981-06-20.</ref> or <source lang=apl inline>,⍨∘⊂⍨∘⊂</source> using only the traditional operators [[Commute]] and [[Compose]]. It was introduced in [[Extended Dyalog APL]], and then adopted into [[dzaima/APL]]. | |||
== Common usage == | == Common usage == | ||
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{{Works in|[[dzaima/APL]], [[Extended Dyalog APL]]}} | {{Works in|[[dzaima/APL]], [[Extended Dyalog APL]]}} | ||
It can also be combined with [[Mix]] to increase rank rather than depth: | It can also be combined with [[Mix]] to increase [[rank]] rather than [[depth]]: | ||
[https://tio.run/##SyzI0U2pSszMTfz//1Hf1EdtE8wUzBUsNLQftU181LvkUe86XU3j//8B Try it online!] | [https://tio.run/##SyzI0U2pSszMTfz//1Hf1EdtE8wUzBUsNLQftU181LvkUe86XU3j//8B Try it online!] | ||
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{{Works in|[[dzaima/APL]], [[Extended Dyalog APL]]}} | {{Works in|[[dzaima/APL]], [[Extended Dyalog APL]]}} | ||
{{APL built-ins}} | == See also == | ||
* [[Link]] | |||
== References == | |||
<references /> | |||
{{APL built-ins}}[[Category:Primitive functions]] | |||