NaN=: __
   maybe_numb=: 3 : 0
a=.NaN ". y
if. a = NaN do. a=. y end.
)
   maybe_numb '12223'
12223
   maybe_numb 'David'
David



2007/12/27, June Kim <[EMAIL PROTECTED]>:
>
> Current numbers operation is:
>    ". '12223'
> 12223
>    ". 'David'
>
>
> I could change the behavior when y can't be turned into a number:
>
>    _99 ". 'David'
> _99
>
> However, how would you define a verb that is:
>
>    maybe_numb '12223'
> 12223
>    maybe_numb 'David'
> 'David'
>
> I am looking for a simple solution.
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>



-- 
Björn Helgason, Verkfræðingur
Fugl&Fiskur ehf, Þerneyjarsund 23, Box 127
801 Grímsnes ,t-póst: [EMAIL PROTECTED]
Skype: gosiminn, gsm: +3546985532
Landslags og skrúðgarðagerð, gröfuþjónusta
http://groups.google.com/group/J-Programming


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  |
   (   -.  |        `-----------------------------------'
   |     ) |        (\_ _/)
  (`-.  '--.)       (='.'=)
   `. )----'        (")_(")
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

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