The length error is obvious if you look at

   a=. 1 2 3 4 1
   b=.~. 1 2 3 4 1
   $a
5
   $b
4


2008/1/10, Yoel Jacobsen <[EMAIL PROTECTED]>:
>
> Hello,
>
> Why does the following raises a length error:
> ((#~.) ~: #) 1 2 3 4 1
>
> Why isn't it like:
> (# ~. 1 2 3 4 1) ~: (# 1 2 3 4 1)
>
> Goal: to check if there a duplicates in an array..
>
>
> Thanks,
>    Yoel
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>



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Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans

góður kennari getur stigið á tær án þess að glansinn fari af skónum
          /|_      .-----------------------------------.
         ,'  .\  /  | Með léttri lund verður        |
     ,--'    _,'   | Dagurinn í dag                     |
    /       /       | Enn betri en gærdagurinn  |
   (   -.  |        `-----------------------------------'
   |     ) |        (\_ _/)
  (`-.  '--.)       (='.'=)
   `. )----'        (")_(")
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