maybe_numb=: 3 : 0
a=._. ". y
n=. _. = a
>({.`}. @. n ) a;y
)
2+> maybe_numb '12223'
12225
maybe_numb 'David'
David
0+maybe_numb '123'
123
2007/12/27, June Kim <[EMAIL PROTECTED]>:
>
> 2007/12/28, Björn Helgason <[EMAIL PROTECTED]>:
> > Similar to:
> >
> > maybe_numb=: 3 : 0
> > a=._. ". y
> > n=. _. = a
> > [ ^: n y
> > )
> > maybe_numb '12223'
> > 12223
> > maybe_numb 'David'
> > David
> > maybe_numb '3+45'
> > 3+45
>
> 0+maybe_numb '123'
> |domain error
> | 0 +maybe_numb'123'
>
> maybe_numb=: 3 : 0
> a=._. ". y
> n=. _. = a
> y ([ ^: n) a
> )
>
> 0+maybe_numb '123'
> 123
> 0+maybe_numb '123+1'
> |domain error
> | 0 +maybe_numb'123+1'
>
>
> >
> >
> > 2007/12/27, Roger Hui <[EMAIL PROTECTED]>:
> > >
> > > mbn=: ] [^:(_.=]) _.&".
> > > mbn '12e3'
> > > 12000
> > > mbn '3+45'
> > > 3+45
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: June Kim <[EMAIL PROTECTED]>
> > > Date: Thursday, December 27, 2007 4:41
> > > Subject: [Jprogramming] Numbers for numbers, otherwise leaving alone
> > > To: Programming forum <[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
> >
>
> ----------------------------------------------------------------------
> 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
