Good Grief Charlie Brown! You're searing again!
ssc=: 13 :'(+/.*|.)>:#y'
ssc 'abcd'
25
sscr=: 13 :'{:+/\>:i.#y'
sscr 'abcd'
10
Linda
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of David Ward
On Thu, Jan 10, 2013 at 11:07 PM, Don & Cathy Kelly wrote:
> A wee bit of a mix up between what I said and what Aai said (no 'quotes'
> appeared to distinguish between the two).
> the 9:23 message was from Aai but the
>
> f=: 13 : '+/-: %>: +:i.y'
>
> and the result corresponds to a specific imm
Just as well since the problems there had a habit of being over-specified,
usually to the detriment of J as they required a specific, highly-scalar
solution.
On Thu, Jan 10, 2013 at 2:03 PM, Raul Miller wrote:
> http://alioth.debian.org/ probably constitutes a contest.
>
> Once upon a time, J w
It is not a bug and the following sequence illustrates why the behavior is
reasonable:
(n$0) , i. 2 2 [ n=: 3
0 0 0
0 1 0
2 3 0
(n$0) , i. 2 2 [ n=: 2
0 0
0 1
2 3
(n$0) , i. 2 2 [ n=: 1
0 0
0 1
2 3
(n$0) , i. 2 2 [ n=: 0
0 0
0 1
2 3
On Fri, Jan 11, 2013 at 8:52 AM, Steven Taylor
thanks for the reply. I can see that this is consistent for rank 2 and
above. The rank 1 case is the bit that isn't making sense to me right now.
(n$0) , i. 2 [ n=: 0
0 1
(n$0) , i. 2 [ n=: 1
0 0 1
--
For information abou
Try this: if you join a length-m vector to a length-n vector, the
resultant vector has length m+n. Make sense? The statement remains true
when m or n or both are 0.
On Fri, Jan 11, 2013 at 9:11 AM, Steven Taylor wrote:
> thanks for the reply. I can see that this is consistent for rank 2 and
Maybe this is just a way to deal with fill behaviour? In which case, 2
cases to remember is easier than three. Sounds like this is a deliberate
choice. Does this come across from APL?
(0 $ 0),!._. (i.2 2)
_. _.
0 1
2 3
(1 $ 0),!._. (i.2 2)
0 _.
0 1
2 3
On 11 January 2013 17:14,
This is a deliberate choice.
http://www.jsoftware.com/help/dictionary/d320.htm
And, APL had different behaviors in different contexts, so to some
degree the J choices are based on introducing consistency where APL
was inconsistent and/or based on simplifying the syntax of the
language. Other asp
In J, we think in terms of items. We use items to represent fundamental
concepts in our programs, such as a person (name, age, gender) or a stock
transaction (instrument, quantity, direction, price) or a ledger entry (asset,
liability, total) or a point in a plane (x, y) or anything else with s
(0 2$0),i.2 2
0 1
2 3
On Fri, 11 Jan 2013 09:00:42 -0800
Roger Hui wrote:
> It is not a bug and the following sequence illustrates why the behavior
> is
> reasonable:
>
>(n$0) , i. 2 2 [ n=: 3
> 0 0 0
> 0 1 0
> 2 3 0
>(n$0) , i. 2 2 [ n=: 2
> 0 0
> 0 1
> 2 3
>(n$0) , i. 2 2 [
I have not tried to use J since J402, but I still/get the blog.
I LOVE Dan's exposition, wish I had it back in 402 days.
Dick Penny
- Original Message -
From: "Dan Bron"
To: [email protected]
Sent: Friday, January 11, 2013 2:26:11 PM
Subject: Re: [Jprogramming] j
There's a Slashdot discussion going on right now about what impedes the
productivity of developers. One person mentioned "Strong typing" but no
one has pointed out the problem with compiled languages. It's here:
http://ask.slashdot.org/story/13/01/11/1850227/ask-slashdot-what-practices-impede-dev
It does assume that the reader knows what it is all about. For learning
it is veryy skimpy.
A more thorough reference is:
http://nptel.iitm.ac.in/courses/Webcourse-contents/IIT-KANPUR/machine/ui/chap3.pdf
The advantage of the Ybus is that it is easy to build -just choose a
reference node an
And what is the point of your example please?
If you append an m-item table to an n-item one the resultant table has m+n
items. That works when m or n or both are 0. No surprise here.
In the original example a list is appended to a table. The list is treated
as a one-row table.
On Fri, Jan
Dan Bron" Said: Friday, January 11, 2013 2:26:11 PM In:
Re: [Jprogramming] joining to an empty list
> ...It's not possible to have "ragged" arrays in J...
That inability is a huge hole in the language. Most other languages
(such as k) deal with this more or less adequately.
One could illustrate
On Fri, Jan 11, 2013 at 7:38 PM, greg heil wrote:
> Dan Bron" Said: Friday, January 11, 2013 2:26:11 PM In:
> Re: [Jprogramming] joining to an empty list
>
>> ...It's not possible to have "ragged" arrays in J...
>
> That inability is a huge hole in the language. Most other languages
> (such as k)
... apologies for indulging in minutia. However, often doing this with J
reveals hidden clarity. I do like to understand edge cases.
the context is a bug I found in my code when an empty set turns up (rare).
Up until that point I hadn't tried that out. Although the unit test may
appear non non
I don't understand why f and g do not agree?
#&>'one';'two';'three'
3 3 5
f=: 13 :'#&>y'
f 'one';'two';'three'
3 3 5
NB. Compose: u&v y ↔ u v y
g=: 13 :'#>y'
g=: 13 :'#>y'
g 'one';'two';'three'
3
Linda
-Original Message-
From: programming-boun...@fo
On Fri, Jan 11, 2013 at 10:07 PM, Linda Alvord wrote:
> I don't understand why f and g do not agree?
Because they are doing something different.
>#&>'one';'two';'three'
> 3 3 5
>f=: 13 :'#&>y'
>f 'one';'two';'three'
> 3 3 5
f counts the number of items in each box.
>NB. Com
Help please!
If I press "reply in Microsoft Outlook I get locked into this look. How can I
get whatever it is turned off. Writing is huge.
It applies to all messages.
Linda
-Original Message-
From: [email protected]
[mailto:[email protected]
Fortunately it shows up in my sent messages in small print.
Linda
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of Raul Miller
Sent: Friday, January 11, 2013 10:14 PM
To: [email protected]
Subject: Re
It seems to be a feature for someone with bad eyesight.
Linda
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Saturday, January 12, 2013 2:19 AM
To: [email protected]
Subject: Re: [
My issue is with the vocabulary. Here is compose:
u&v y ↔ u v y . Thus +:&- 7 is _14 (double the negation). Moreover, the monads
u&v and u@v are equivalent.
f=: 13 :'#&>y'
f 'one';'two';'three'
3 3 5
g=: 13 :'#>y'
g 'one';'two';'three'
3
I play the part of a perpetual beginner.
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