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Use internal link instead of external to primitive functions; grammar etc.
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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]]. | 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]]. | ||
For example, | |||
<source lang=apl> | |||
1,1 2 3 ⍝ join 1 with 1 2 3 | |||
1 1 2 3 | |||
1,¨1 2 3 ⍝ join 1 with each element of 1 2 3 | |||
┌───┬───┬───┐ | |||
│1 1│1 2│1 3│ | |||
└───┴───┴───┘ | |||
</source> | |||
The Each operator has no effect on [[scalar function]]s, since these functions already map over each array element. | |||
For example, both expressions below have the same meaning, since <source lang=apl inline>+</source> is a scalar function. | |||
<source lang=apl> | |||
1 + 1 2 3 4 | |||
2 3 4 5 | |||
1 +¨ 1 2 3 4 | |||
2 3 4 5 | |||
</source> | |||
== External links == | == External links == | ||