Thank you for that, it is close, but not exactly what I am trying to do!
The number 4 does not change, but the number being subtracted does.
For example,
9 verb 2
9 7 5 3
25 verb 4
25 21 17 13
I hope you can understand what I want know, but Ill try play with your
example, see if I can get it to work.
Thanks,
Joey (the other one this time!)
On Dec 2, 2007 10:12 PM, Joey K Tuttle <[EMAIL PROTECTED]> wrote:
> I'm not sure exactly what you are trying to do, but if it is
>
> 10 - 4 * i. 4
> 10 6 2 _2
>
> Then you could make a verb that named 10 as x and 4 as y thusly -
>
> cd =. 4 : 'x - y * i. y'
> cd
> 4 : 'x - y * i. y'
>
> 10 cd 4
> 10 6 2 _2
>
> 100 cd 10
> 100 90 80 70 60 50 40 30 20 10
>
> If you want a tacit form, you can let j generate it -
>
> cd =: 13 : 'x - y * i. y'
> cd
> [ - ] * [: i. ]
>
> 10 cd 4
> 10 6 2 _2
>
> 100 cd 10
> 100 90 80 70 60 50 40 30 20 10
>
> cd 5
> 5 0 _5 _10 _15
>
> cd 10
> 10 0 _10 _20 _30 _40 _50 _60 _70 _80
>
> - joey (also :)
>
>
> At 21:49 +0000 2007/12/02, Joey wrote:
> >Hello J-ers!
> >
> >I have only been working with J for a week or so now, so I am still
> getting
> >to grips with all the concepts and verbs etc.
> >
> >I am trying to get a running countdown. Of which, I thought I could maybe
> >use something like:
> > (4&+)/\ (4#10)
> >but this does not produce the correct results.
> >I finally found :
> > (4 : 'y-4')/\ 4#10
> >but I had wondered if there was a better way to do this, since it doesn't
> >look very nice.
> >
> >Now I want to create a verb, based on the above, so that I could change
> the
> >value of 4. I tried :
> > 2 (4 : '(4 : ''y-x'')/\(4#y)') 10
> >again this is very ugly, and doesn't even work!
> >
> >Thanks alot,
> >Joey
> >----------------------------------------------------------------------
> >For information about J forums see http://www.jsoftware.com/forums.htm
>
> ----------------------------------------------------------------------
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>
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