For me one of the killer apps for J was the beauty of the code, in
particular I have been enamored of being able to write code that looks like
natural sentences and writing sentences that look declarative in the sense
that they don't have loops, but may have sub sentences. That is why I tried
to wr
Distractions are probably good in a promotional video only to the extent that
one wishes to divert attention from the product being promoted.
Certainly relevant music can add to the impact of a presentation by suggesting
a mood, etc. But adding _irrelevant_ music is pointless.
On Fri, 7 Mar 20
I'm surprised that the music discussion continues.
I took its instigation as a joke assuming that _any_
music in this context would be distracting at best.
PMA wrote:
Maybe Stockhausen's _Klavierstuck IX_? It's based on the Fibonacci series.
Roger Hui wrote:
(1) There is perhaps a generation
Could you please explain with an example what your code will do that needs all
the definitions that you include.
o=: @:
ar=: 5!:1@<
Cloak=: (0:`)(,^:)
Cloak=: (ar'Cloak')Cloak
'evoke tie'=: < o Cloak "0 o ;: '`: `'
g2v=: evoke&6 o tie f.
( +/`'' (evoke&6
I have successfully drawn gl.LINES in my adaptation of Eric's demogl1.ijs,
but each time I draw a new line that the user's command produces (for
example, say `forward 2` produces a line from 0,0,0 to 0,2,0) all of the
graphics on the incumbent canvas are erased, and that line (from 0,0,0 to
0,2,0)
I was using mean as a simple placeholder (J's tutorial fork) verb that was
being created by gerunds. I was looking for a solution for taking the result
of a function that produces gerunds to convert that into a verb (train) from
that same function. The problem with:
(+/`'' ( 4 : 'x ` y')
That's certainly one way of looking at it.
https://en.wikipedia.org/wiki/Positioning_(marketing) might be another way
of looking at this.
Look... if *all* you show is your product - no background, no context, no
fun, then you might be quite successful at preaching to the choir (that
would be us).
That said... if someone wants to put together a gloomy (or downtempo) promo
for J?
We could use, those, also.
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 2:49 PM, Raul Miller wrote:
> That's certainly one way of looking at it.
>
> https://en.wikipedia.org/wiki/Positioning_(marketing) might be a
I know you've mentioned this capability before - can you refresh my memory?
Short of passing in strings and evoking them, how would you get an explicit
verb to "see" an adverb (or conjunction) as an argument? What name does it get
assigned to (if it is possible for y and/or x to not have namecla
Re: Raul's point about harsh self criticism, I don't think any of this so
far has been overly harsh. I certainly didn't mean my comment about the
music to be much, other than an observation, perhaps a recommendation for
the next time.
Re: rest of the comments. Remember as far as "code beauty" and
On Sat, Mar 8, 2014 at 3:00 PM, Yike Lu wrote:
> To reframe the question of the killer app: What common computing problem
> does J uniquely solve, or solve uniquely better? Again, I honestly do not
> know. I'm actively trying to come up with reasons to slip it into my daily
> routine (which is ab
Explicit verbs can refer to things by name.
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 3:00 PM, Dan Bron wrote:
> I know you've mentioned this capability before - can you refresh my memory?
>
> Short of passing in strings and evoking them, how would you get an
> explicit verb to "see" an adverb
First of all, bravo to Martin for putting in the time
and effort to make that video. I think it does a very
good job of showing a newbie why it might be worth
learning J. So please---please---take the following
criticism as constructive.
Concerning the music: I felt the music's emotional
content v
Am I the only one that liked the music?
Maybe my tastes are just strange...
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 3:34 PM, Dan Abell wrote:
> First of all, bravo to Martin for putting in the time
> and effort to make that video. I think it does a very
> good job of showing a newbie why it
Hi Brian - It sounds like it should work if you are evaluating a drawLines
call after each ajax request and not refreshing the whole page.
Can you post the full code or at least the part that handles the ajax
response to better diagnose?
On Mar 8, 2014 2:18 PM, "Brian Schott" wrote:
> I have suc
I, too like the music.
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of Raul Miller
Sent: Saturday, March 08, 2014 14:44
To: Programming forum
Subject: Re: [Jprogramming] J in 5 minutes
Am I the only one that
Music tends to commandeer my attention, either
to listen (if I "like" it) or to shut it out (if I "don't").
Paying attention to something else -- e.g., J -- at
the same time is just out of possibility.
Still, I gather that not everybody is so-afflicted.
Raul Miller wrote:
Am I the only one tha
On 8 March 2014 12:00, Yike Lu wrote:
...
>>TouchQuery looks really cool, but it's not a killer app, it's a great tool. I
>>mean -- have you ever switched to a language because the IDE was awesome?
>i would likely turn that around and ask myself: what languages have i avoided
>because they were
A verb's "argument" refers to the values used to invoke it. Therefore names
fixed in its definition are not arguments (excepting y and x which are defined
to refer to its argument(s)).
Yes, it is possible to invoke verbs with strings or other nouns which directly
or indirectly name non-nouns (
I've found J is a powerful *thinking tool* like no other.
In Python, R, Ruby and others you're writing an algorithm to solve the
problem at hand.
In J you transform your data, step after step, squeezing the solution out
of them.
On Sat, Mar 8, 2014 at 10:00 PM, Yike Lu wrote:
> Re: Raul's point
> In J you transform your data, step after step, squeezing the solution out of
them.
In APL, what flashes through your mind is a cascade of operations: chasing
data through arrays, out of the other end of which come — limping and
bruised, you know — seven numbers. After having built up arrays of r
Point taken.
Might be in his modified J interpreter though.
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 4:27 PM, Dan Bron wrote:
> A verb's "argument" refers to the values used to invoke it. Therefore
> names fixed in its definition are not arguments (excepting y and x which
> are defined to re
On Mar 8, 2014 3:00 PM, "Yike Lu" wrote:
>
> I'm actively trying to come up with reasons to slip it into my daily
> routine (which is about 95% Python), and I keep failing. I would have to
> spend probably a month or two of off-hours development to get my small
> j-table project up to par with Py
The statement "Explicit verbs can take adverbs and conjunctions as arguments
because I've modified the language to allow explicit verbs to take adverbs and
conjunctions as arguments" would also be trivial. Mr. Quintana is not given to
making trivial statements (though I would not be surprised if
The music excited me.
Long scrolls through application code bored me.
I agree with the suggestion of examples involving literals. I used j to
parse html. Due to errors in the html my j program worked whereas the
python html parser I had initially tried failed. I used a lot of box
cuts with
Joe,
Thanks for the offer. I have put the code here. https://dpaste.de/qJge
Believe it or not it is dumbed down, even though it is long.
The main trick I used to trim it was to replace the usual user input, which
is something like `fd 20`, with the suggested jhrajax input.
Let me know if there is
Brian, it definitely looks like it's something with the webgl code
instead of what you are doing with J. I am not familiar with webgl so
I will need to read up on it.
I can say it's webgl/javascript because I get the same behavior of
wiping out the canvas if I just paste lines like this into the
j
First, the simplest way to do what I think you are asking is
gl = canvas.getContext('webgl', {preserveDrawingBuffer: true});
Second, after visiting http://127.0.0.1:65001/tgsj I noticed that arrow
keys were inert (and I did not explore the option of typing a command).
Hopefully this just reflec
Raul,
With regard to changing the definition of gl, it did not seem to accomplish
anything. I never heard of that option, though. Maybe I have something else
tricked up to outsmart that option?
I had to disable the keys because that feature was undermining my ability
to read the user's inputs. I
Oops, I meant in the second paragraph, that I have *not* been able to
reinstate ...
On Sat, Mar 8, 2014 at 8:28 PM, Brian Schott wrote:
> Raul,
>
> With regard to changing the definition of gl, it did not seem to
> accomplish anything. I never heard of that option, though. Maybe I have
> someth
Can you tell me the steps you are using to get the behavior you do not want
(and what you want to happen instead)?
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 8:28 PM, Brian Schott wrote:
> Raul,
>
> With regard to changing the definition of gl, it did not seem to accomplish
> anything. I never
When I click enter on the text field and press enter, even with the phony
text that is presently in it, the drawing disappears, instead of staying
and a new line appearing. When there is real information in the text field,
a turtle command moving the turtle forward by n steps, the drawing
disappear
With
function init() {
try {
var canvas = document.getElementById("glcanvas");
gl = canvas.getContext('webgl', {preserveDrawingBuffer: true});
if ( ! gl ) {
throw "Could not create WebGL context.";
}
I cannot reproduce this.
With
function init() {
Why is the display of f different than g , h and I ?
NB. m&v y is defined as m v y
NB. u&n y is defined as y u n
f=: 13 :'4&*y'
g=: 13 :'4*&y'
h=: 13 :'y&*4'
i=: 13 :'y*&4'
f
4&*
g
3 : '4*&y'
h
3 : 'y&*4'
The patches, a Windows 32-bit DLL, a cheatsheet, 32 and 64 bit Unix
libraries are found at:
http://www.2bestsystems.com/foundation/j/
For more details and demonstration code, see the article in the Journal of
J: http://journalofj.com/index.php/vol-2-no-2-october-2013 (only the
definition of
Will it change current J semantics or break existing code?
If it is compatible with current J701 engine, I'll try to add
it into android libj.so which is also GPL licensed.
Is there any test suite for the extensions? Actually I don't
understand those extensions, sorry to be slow.
Сб, 08 мар 2
In f, the noun you are bonding to the verb is the number 4.
In g and h, the noun you are bonding to the verb is the parameter y.
In i you are implementing a syntax error.
The trees for g, h and i represent explicit definitions.
Thanks,
--
Raul
On Sat, Mar 8, 2014 at 11:33 PM, Linda Alvord
A suggestion: where do the understood parentheses go in 4&*y and in 4*&y ?
--Kip
Sent from my iPad
> On Mar 8, 2014, at 10:33 PM, "Linda Alvord" wrote:
>
> Why is the display of f different than g , h and I ?
>
>
>
>NB. m&v y is defined as m v y
>
>
>
> NB. u&n y is
Raul,
Perhaps, by mistake, I added the phrase `,{preserveDrawingBuffer: true}` in
the `if (!gl)` clause instead of the original `gl=` clause, and the drawing
worked correctly. I think on my computer the experimental-webgl is more
important that the webgl, and that's why your clause really worked f
I do not recall mentioning this before. I do remember saying that an
adverb could take an adverb or a conjunction as an argument in a previous
version of the interpreter, J4, I think (this also happens in our
permissive version of the interpreter).
My guess is that there is a guard checking the e
"Mr. Quintana" ? :D
On Sat, Mar 8, 2014 at 5:17 PM, Dan Bron wrote:
> The statement "Explicit verbs can take adverbs and conjunctions as
> arguments because I've modified the language to allow explicit verbs to
> take adverbs and conjunctions as arguments" would also be trivial. Mr.
> Quintana
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