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Atop (operator): Difference between revisions
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Close composition (SHARP/J) section
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== Close composition == | |||
In [[SHARP APL]] and [[J]], Atop is implemented as a [[close composition]], meaning that (using SHARP syntax) <source lang=apl inline>f⍥g</source> has the overall [[function rank]] of <source lang=apl inline>g</source>. J uses <code>@</code> for the close form and <code>@:</code> for the rankless form that appears in modern APLs. | |||
== External links == | == External links == | ||
=== Lessons === | === Lessons === | ||