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{{Built-in|Each|¨}} is a [[primitive operator|primitive]] [[monadic operator]] which applies its [[operand]] to each [[element]] of the [[argument]]s, and returns an array whose elements are the results. If two arguments are given, their elements are matched using [[conformability]] rules. | |||
Each is defined only in [[nested]] APLs. Some [[flat]] APLs obtain analogous functionality by using an [[Under]] operator with [[close composition]] along with the [[Function rank|rank]]-0 function [[Disclose]] (or Unbox). In [[SHARP APL]] this is written < | Each is defined only in [[Nested array model|nested]] APLs. Some [[Flat array model|flat]] APLs obtain analogous functionality by using an [[Under]] operator with [[close composition]] along with the [[Function rank|rank]]-0 function [[Disclose]] (or Unbox). In [[SHARP APL]] this is written <source lang=apl inline>f¨></source>. In [[J]] it is <source lang=j inline>f&.></source>. | ||
Each differs from the [[Rank operator]] with rank 0 in that the operand arguments and results are not | Each differs from the [[Rank operator]] with rank 0 in that the operand arguments and results are not [[enclose]]d. As the [[elements]] of a nested array they need not be [[scalar]]. | ||
== External links == | |||
=== Lessons === | |||
* [https://chat.stackexchange.com/rooms/52405/conversation/lesson-3-some-apl-operators-----#message-40899092 APL Cultivation] | |||
=== Documentation === | |||
* [https://help.dyalog.com/latest/index.htm#Language/Primitive%20Operators/Each%20with%20Monadic%20Operand.htm Dyalog] (monadic operand), [https://help.dyalog.com/latest/index.htm#Language/Primitive%20Operators/Each%20with%20Dyadic%20Operand.htm Dyalog] (dyadic operand) | |||
* [http://microapl.com/apl_help/ch_020_020_900.htm APLX] | |||
{{APL built-ins}}[[Category:Primitive operators]] | |||