So, you are saying this may be an interesting opportunity to implement d. (and
D.) in J?I am thinking about foolhardily attempting this challenge.
> Date: Sat, 25 Apr 2015 20:37:57 -0400
> From: [email protected]
> To: [email protected]
> Subject: Re: [Jprogramming] Antiderivative fails
>
> I wouldn't. d. and D. have many peculiarities, which you can see by
> looking at the bug list.
>
> Long ago Roger said IIRC that if he had it to do over he would not
> implement d. and D. as primitives. His point was that the analysis
> needed could be done just as well in a J script, and then it could be
> expanded and maintained by ordinary mortals (my words, not his).
>
> Since the analysis is done when the conjunction is executed, not when
> the derived verb is executed, there's no need to avoid J for the analysis.
>
> A J model of d. and D. would be a better use of time.
>
> Henry Rich
>
> On 4/25/2015 8:28 PM, Raul Miller wrote:
> > Oops, you are right.
> >
> > Also, it seems that these work properly:
> >
> > (^&_2.000000000001) d. _1
> > (^&_1)d._1
> >
> > So it seems like a bug.
> >
> > Does anyone feel like diagnosing why this happens? Or should I do that?
> >
> > Thanks,
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
