Paul -- that was one of my first feelings watching this thread. Thanks to
my mundane experience of training materials involving both APL and J, I was
drawn into the problem of productively typing J code with APL comments.
This drove me to produce these tools:
An APL to J Phrasebook
http://www.j
Thanks a lot, Igor, for the example and all the work you put into the
library. Both methods (1) and (2) chug along for a few minutes but end up
spitting out a result that looks reasonable.
Cheers,
Mike
On Tue, Apr 9, 2013 at 12:51 AM, Igor Zhuravlov wrote:
> On 8 апреля 2013 22:53:13 Michal
On 04/09/2013 04:18 PM, Alan Stebbens wrote:
Similarly, the alternative J input method might have allow one to enter
"i", which could be a simple variable by itself, the start of a longer
variable name, or the beginning of a J symbol: i. -> iota, i: -> steps.
Entering "!" would show auto-completi
No, it won't cancel "any" (by which I mean "all") of the advantage.
But yes, it will lose SOME. It's a tradeoff.
...
It seems reasonable that the people motivated to have a non-ASCII input
and presentation mode for J should develop a working prototype, or work
with someone who has the skills t
You could try to approach it from the other side. If it is not too
difficult to describe your function yourself in C, you could write a small
piece of C code, run your AD algorithm on it and then call that C code from
J. Calling C code and passing arrays between J and C from J is very easy
using th
On Tue, Apr 9, 2013 at 5:48 PM, Steven Taylor wrote:
> I'm curious to see what Greg cooks up. I am in VS most days, so I'm bound
> to check it out.
...
> Do the lessons of html, css, js, jsv, json apply here? It's nice being
> able to send an email with some code, and it'll just work.
I have ne
Given that this feature has generated quite some interest I will give it
higher priority. At the expense of syntax coloring/context-sensitive
intellisense, for the initial stage. Something to play with, pretty dumb
but illustrating the concept, just to get a feel.
On Tue, Apr 9, 2013 at 4:48 PM,
Hi Devon
Unfortunately the AutoDif algorithm requires almost complete integration of
the code that I am considering. This has to do with the nature of
autodifferentiation. It requires access to the code for the equations to
apply the chain rule (forwards and backwards in my case). Passing
paramete
just want to point out that I'm Steven Taylor, not Stephen Taylor. I've
met Stephen once. He was the editor of Vector magazine in the UK... so, I
don't want to create any heat for Stephen. ;-)
"APL character set actually *enhances* the unification of similar notions"
I hope so. I remember a c
Amen brother :-)
On Tue, Apr 9, 2013 at 12:55 PM, Skip Cave wrote:
> Stephen,
>
> I agree that making libraries and argument conventions more accessible
> would take a significant step toward smoothing the J learning curve.
> However, there is just something elegant about Iverson's notation tha
Stephen,
I agree that making libraries and argument conventions more accessible
would take a significant step toward smoothing the J learning curve.
However, there is just something elegant about Iverson's notation that
attracts people, eases the learning curve, and keeps diehard programmers
using
Hi -
did you see something like this from Igor Z?
load 'math/mt'
geevlnn=: {.@ggevlnn_mt_@(,:(idmat_mt_@c_mt_))
geevlnn i.2 2
_0.561553 3.56155
geevlnn p: i.4 4
104.336 _4.54479 1.02295 _1.81419
I don't know what's a canonical matrix to use for eigenvalue demonstration,
so these wil
Also, there's a 2x2 of black cells starting at (3,2).
On Mon, Apr 8, 2013 at 9:34 PM, Linda Alvord wrote:
> Thanks Roger. When I get the result that works, I won't send it out. At
> least I learned how to make the image available. Linda
>
> -Originat l Message-
> From: programming-boun
Thanks - I had a good idea what it was from the name and usage. Thanks
for putting this package together.
It's good to have a portable J-based solution.
On Mon, Apr 8, 2013 at 11:27 PM, Igor Zhuravlov wrote:
> On 8 апреля 2013 11:51:05 Devon McCormick wrote:
> > I attempted to use one of the
If we want to keep the idea that a single-glyph version of J could be used
as a *written notation* as well as a computer-entered programming language,
coloring the characters will probably not work. I wouldn't want to be
changing pen colors while writing J formulas on paper, or changing chalk
color
neville holmes wrote:
> Provide an option whereby J. primitives can be displayed
> as the base J character but in (say) red, and J: primitives
> can be displayed in (say) green.
Humans don't process color with the same circuits that process text;
so where color reinforces what the text says it's
I still think making the libraries + argument conventions more navigable
would be a more productive and better received application of the VS IDE.
I did enjoy seeing Mark Simpsons APL to J mappings. Visually things like
square root and not made more sense.
With this symbol variation approach I'd
There will be such a utility when you write it.
A more practical approach may be to call the J DLL from within your C++
code but I've not done this myself.
On Tue, Apr 9, 2013 at 9:37 AM, bcubed wrote:
> Hi forum
> Is there any utility or function in J to translate J code to C/C++? I have
> a
Thanks for letting us know. I don't have a 64 bit XP machine (those are
pretty rare anyway, I think), but they do work with Vista/Windows7 64 bit.
On Tue, Apr 9, 2013 at 3:42 AM, bill lam wrote:
> I tested the binaries work fine a 32-bit windows xp. May be the 64-bit
> windows xp is not suppor
Hi forum
Is there any utility or function in J to translate J code to C/C++? I have
a project in which I would like write most of the code in J but then
integrate this into code on Auto Differentiation which is written in C++. I
know that Matlab has this functionality but haven't encountered it in
I tested the binaries work fine a 32-bit windows xp. May be the 64-bit
windows xp is not supported, but that will not be serious problem for me.
On Fri, Apr 5, 2013 at 12:03 AM, Greg Borota wrote:
> Strange message, never seen that before.
>
> I see that in Visual Studio one can target Itanium
On 8 апреля 2013 22:53:13 Michal D. wrote:
> I haven't been able to sort through the mt code to decipher how to call the
> routines with a single input matrix. It looks like quite a substantial
> amount of important work.
load'math/mt'
NB. generate random symmetric 4x4-matrix to play with
I'm not as convertible as Skip Cave. I don't think
that overlapping with the APL character set is a very
good idea.
How about this for another approach:
Provide an option whereby J. primitives can be displayed
as the base J character but in (say) red, and J: primitives
can be displayed in (say)
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