Inserting a 2 column array in a specified column of a rank 3 array. *Given*:
a=.i.2 3 5
b=.i.2 3
]c=.2{"1 a
2 7 12
17 22 27
*This one is fine:*
b(2&{"1@])}a
0 1 0 3 4
5 6 1 8 9
10 11 2 13 14
15 16 3 18 19
20 21 4 23 24
25 26 5 28 29
*But not this quite similar one*:
b c }a
|index error
| b c}a
*Why?*
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