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operand has to be dyadic
(Created page with "{{Built-in|Key|⌸}} is a primitive monadic operator with an ambivalent operand where specified keys group the indices or major cells of an argument. It was introduced...") |
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{{Built-in|Key|⌸}} is a primitive [[monadic operator]] | {{Built-in|Key|⌸}} is a [[primitive operator|primitive]] [[monadic operator]] which takes a [[dyadic function]] [[operand]] where specified keys group the indices or major cells of an argument. It was introduced in [[Dyalog APL]] version 14.0 and is commonly compared to SQL's "GROUP BY" clause. | ||
== Description == | == Description == | ||