[Jprogramming] Catenating columns.

['robert therriault' via Programming]

Hi Skip,

I think that I would start with this entry from J  for C Programmers, although you might need to read the entire chapter to get the context of the dyad rank section.

https://www.jsoftware.com/help/jforc/loopless_code_i_verbs_have_r.htm#_Toc191734341

Cheers, bob

> On Dec 6, 2022, at 13:49, 'Skip Cave' via Programming <programming at jsoftware.com> wrote:
> 
> Elijah,
> that's what I want!
> 
> 54 48,"_ 0 i.10
> 
> 54 48 0
> 
> 54 48 1
> 
> 54 48 2
> 
> 54 48 3
> 
> 54 48 4
> 
> 54 48 5
> 
> 54 48 6
> 
> 54 48 7
> 
> 54 48 8
> 
> 54 48 9
> 
> 
> Where can I find the documentation on *,"_ 0 * ??
> 
> 
> Skip Cave
> Cave Consulting LLC
> 
> 
> On Tue, Dec 6, 2022 at 1:32 AM Elijah Stone <elronnd at elronnd.net> wrote:
> 
>> ,. is ,"_1; in other words, catenate corresponding cells of each argument.
>> 54 48 has 2 cells, but i.10 has 10 cells; that doesn't work.
>> 
>> Perhaps you want 54 48 ,"_ 0 i.10.
>> 
>> On Tue, 6 Dec 2022, 'Skip Cave' via Programming wrote:
>> 
>>> I can add a column of increasing integers to a fixed integer:
>>> 
>>> 48,.i.10
>>> 
>>> 48 0
>>> 
>>> 48 1
>>> 
>>> 48 2
>>> 
>>> 48 3
>>> 
>>> 48 4
>>> 
>>> 48 5
>>> 
>>> 48 6
>>> 
>>> 48 7
>>> 
>>> 48 8
>>> 
>>> 48 9
>>> 
>>> 
>>> Now I want to add the same increasing column to *two* fixed integers:
>>> 
>>> 54 48,.i.10
>>> 
>>> |length error
>>> 
>>> | 54 48 ,.i.10
>>> 
>>> 
>>> Why doesn't this work?
>>> 
>>> Skip Cave
>>> Cave Consulting LLC
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