[Jprogramming] What to say about J to APLers?

[Björn Helgason]

J has a brilliant Life demo at studio/demo

2009/5/26 Tracy Harms <kaleidic at gmail.com>

> Devon,
>
> The demo of Conway's Life in APL http://tr.im/hVvp is a very nice
> presentation that will likely be familiar to your audience. One
> possibility would be to rework that code in J, perhaps working in
> parallel to the steps shown in the video.
>
> When I did something like that for myself one thing that jumped out at
> me was the way J lets me do two rotations in a single function, with
> each rotation specified by an atom in the left vector. I especially
> enjoyed seeing the simplification provided by |. and I furthermore
> think the J symbol is visually mnemonic in the same manner as the two
> APL rotation primitives it replaces.
>
> That's a simple, clear example that shows how J extends
> array-thinking. Other examples may emerge from translating or
> abstracting that demo code.
>
> Tracy
>
>
> On Thu, May 14, 2009 at 12:18 PM, Devon McCormick <devonmcc at gmail.com>
> wrote:
> > Members of the Forum -
> >
> > I'm supposed to give a 40-minute or so talk at BAPL09.  I've chosen as my
> > topic "The State of SIGAPL and Musings on J": a report on the status and
> > prospects of the (former) SIGAPL will be followed by a brief introduction
> to
> > J and how it continues Iverson's legacy.
> >
> > Unfortunately, the SIGAPL portion of this talk shouldn't take more than a
> > couple of minutes, so I've got to come up with something about J that
> would
> > be interesting to a bunch of APLers.  I have a few ideas but would be
> > interested in hearing what people would suggest.
> >
> > Also, is anyone else from this forum going?
> >
> > Thanks,
> >
> > Devon
> >
> > --
> > Devon McCormick, CFA
> > ^me^ at acm.
> > org is my
> > preferred e-mail
> > ----------------------------------------------------------------------
> > 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
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         /|_      .-----------------------------------.
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    ,--'    _,'   | Dagurinn í dag                     |
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