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(Created page with "{{Built-in|Link|⊃}}, or <source lang=j inline>;</source> in J, is a dyadic primitive function which builds a nested vector out of the two argument|argu...") |
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| Line 26: | Line 26: | ||
└─────────┴───┘ | └─────────┴───┘ | ||
</source>{{Works in|[[SHARP APL]]}} | </source>{{Works in|[[SHARP APL]]}} | ||
Similarly, the chaining fails if the rightmost array is already nested: | |||
<source lang=apl> | |||
1 2⊃3 4⊃<5 6 | |||
┌───┬───┬───┐ | |||
│1 2│3 4│5 6│ | |||
└───┴───┴───┘ | |||
</source>{{Works in|[[SHARP APL]]}} | |||
What we really wanted was: | |||
<source lang=apl> | |||
┌───┬───┬─────┐ | |||
│1 2│3 4│┌───┐│ | |||
│ │ ││5 6││ | |||
│ │ │└───┘│ | |||
└───┴───┴─────┘ | |||
</source> | |||
Link is different from [[Pair]] <source lang=apl inline>⍮</source>, as Pair simply encloses both arguments and always produces a length-2 vector, so it cannot be used to construct a long nested array of uniform depth like Link does. | Link is different from [[Pair]] <source lang=apl inline>⍮</source>, as Pair simply encloses both arguments and always produces a length-2 vector, so it cannot be used to construct a long nested array of uniform depth like Link does. | ||