> From: Jimmy Miller
>
> I just had the following session in J 6.02:
>
> a;2;'127.0.0.1';80
> +--+-+---------+--+
> |19|2|127.0.0.1|80|
> +--+-+---------+--+
> 19;2;'127.0.0.1';80
> +--+-+---------+--+
> |19|2|127.0.0.1|80|
> +--+-+---------+--+
>
> Now, my question is, given that sdconnect was passed the exact same
> argument in both calls, why did it give an error on the first one, and
> not the second? Why does the use of the variable name have anything
> to do with it?
Because although the argument appears to be the same they aren't.
#$19
0
#$a
1
In other words, 19 is atomic (rank 0) whereas a is a one item list.
So this should work:
sdcheck sdconnect ({.a);2;'127.0.0.1';80
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