[Jprogramming] Tacit obverse?

Mark Rosenthal mwr0707 at earthlink.net
Sat Aug 22 18:54:23 HKT 2009


I was experimenting with string manipulation, and one case that seems to generate domain errors with obverse is:
('$'&,@,&'$')^:_1 '$foo$'

For these situations, should we revert to explicit obverse definition?

Is there a formal list of "obverse-capable" primitives?

-----Original Message-----
>From: Raul Miller <rauldmiller at gmail.com>
>Sent: Aug 21, 2009 8:04 PM
>To: Programming forum <programming at jsoftware.com>
>Subject: Re: [Jprogramming] Tacit obverse?
>
>On Fri, Aug 21, 2009 at 8:12 PM, Mark Rosenthal<mwr0707 at earthlink.net> wrote:
>> So is the obverse of a tacit definition always implied?... Can J always figure it out from the original definition?
>
>Not always, but in some handy cases, yes.
>
>-- 
>Raul
>----------------------------------------------------------------------
>For information about J forums see http://www.jsoftware.com/forums.htm



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