I have often wished for that.
--
Raul
On Mon, Apr 15, 2013 at 8:43 PM, Roger Hui wrote:
> I have a question concerning your use of *key*. Do you find yourself
> wishing that in x f/.y, the f would be invoked with a left argument which
> is key value corresponding to the items in the right argu
On Mon, Apr 15, 2013 at 8:28 PM, Jose Mario Quintana
wrote:
> So far no solution is transforming T into U and perhaps emulating U is what
> was meant, as in
> Raul's solution T(4 :'http://www.jsoftware.com/forums.htm
Yes, very much. I am continually writing
x (~.@[ ... f/.) y
And what does it cost? f@]/. would get the current behavior.
Henry Rich
On 4/15/2013 8:43 PM, Roger Hui wrote:
I have a question concerning your use of *key*. Do you find yourself
wishing that in x f/.y, the f would be invoked wit
Yes.
Please excuse typos; composed on a handheld device.
On Apr 15, 2013, at 6:43 PM, Roger Hui wrote:
> I have a question concerning your use of *key*. Do you find yourself
> wishing that in x f/.y, the f would be invoked with a left argument which
> is key value corresponding to the items
I have a question concerning your use of *key*. Do you find yourself
wishing that in x f/.y, the f would be invoked with a left argument which
is key value corresponding to the items in the right argument? This does
not mean that the J definition or implementation will be changed, but to
find out
> On Sun, Apr 14, 2013 at 10:41 AM, km wrote:
>> It would be nice if there were a simple way to transform your T into U :
>>
>> U =: 2 2 $ +/ ; |: ; |. ; -/ . *
So far no solution is transforming T into U and perhaps emulating U is what
was meant, as in
Raul's solution T(4 :'http://www.jsoftw
Thanks. Linda
-Original Message-
From: programming-boun...@forums.jsoftware.com
[mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul Miller
Sent: Monday, April 15, 2013 11:03 AM
To: Programming forum
Subject: Re: [Jprogramming] Table of Verbs
A=:>:i.2 2
F=: 2 2$ '+/
http://pythonnet.sourceforge.net/
http://pythonnet.sourceforge.net/readme.html
These guys call .NET from the C based python interpreter. Without
implementing Python on the .NET platform like IronPython does it.
So maybe that same approach would work with J too. Just throwing this out
there, maybe
A=:>:i.2 2
F=: 2 2$ '+/';'|:';'|.';'-/ .*'
([:$"."1)(>"0 F)(,"1)2 2 1$'A'
2 2 2 2
([:$".)"1(>"0 F)(,"1)2 2 1$'A'
2 0
2 2
2 2
0 0
So it's about the relevance of those parenthesis.
9!:3]6
$@"."1
($@".)"1
([:$"."1)
[: $ ("."1)
([:$".)"1
([: $ ".)"1
You need $ to be modifi
An example where a table of verbs is used in a J program is the
poker-scoring program I posted to the wiki. In that instance look at the
definition and use of ScoringTable
http://www.jsoftware.com/jwiki/TracyHarms/PokerHandsScoring
--
Maybe this is a clearer explanation of my question.
A=:>:i.2 2
f=: 2 2$ '+/';'|:';'|.';'-/ .*'
"."1 (>"0 f)(,"1)2 2 1$'A'
4 6
0 0
1 3
2 4
3 4
1 2
_2 0
0 0
<"2 "."1 (>"0 f)(,"1)2 2 1$'A'
┌───┬┐
│4 6│1 3 │
│0 0│2 4 │
├───┼┤
│3 4│_2 0│
│1 2│ 0 0│
└───┴┘
($@"
Does this help?
require 'general/misc/trace'
trace 'U=: T (4 :'' wrote:
> Kip, Raul's works with a space after 4
>
>T =: 2 2 $ +/`|:`|.`(-/ .*)
>U=: T (4:'U i.2 2
> 4
>U=: T (4 :'U i.2 2
> ┌───┬───┐
> │2 4│0 2│
> │ │1 3│
> ├───┼───┤
> │2 3│_2 │
> │0 1│ │
> └───┴───┘
>
Raul, I like your use of capitals for data and small letters for functrions,
so...
T =: 2 2 $ +/`|:`|.`(-/ .*)
T
┌───┬───┐
│┌─┬───┐│|: │
││/│┌─┐││ │
││ ││+│││ │
││ │└─┘││ │
│└─┴───┘│ │
├───┼─
Kip, Raul's works with a space after 4
T =: 2 2 $ +/`|:`|.`(-/ .*)
U=: T (4:'mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul Miller
Sent: Monday, April 15, 2013 8:23 AM
To: Programming forum
Subject: Re: [Jprogramming] Table of Verbs
U=: T (4 :' wrote:
> Your use of `:
U=: T (4 :' wrote:
> Your use of `: is very neat, thank you, but the desired results are those of
> U below. --Kip
>
> T =: 2 2 $ +/`|:`|.`(-/ .*)
> <"2 (T `: 0) i. 2 2
> +---++
> |2 4|0 2 |
> |0 0|1 3 |
> +---++
> |2 3|_2 0|
> |0 1| 0 0|
> +---++
> <"2 (T `: 0)
Your use of `: is very neat, thank you, but the desired results are those of U
below. --Kip
T =: 2 2 $ +/`|:`|.`(-/ .*)
<"2 (T `: 0) i. 2 2
+---++
|2 4|0 2 |
|0 0|1 3 |
+---++
|2 3|_2 0|
|0 1| 0 0|
+---++
<"2 (T `: 0) i. 3 3
+---+-+
|9 12 15|0 3 6|
|0
(>"0 f)(,"1)2 2 1$'A'
+/ A
|: A
|. A
-/ .*A
(>"0 f)(,"1)2 2 1$'A'
+/ A
|: A
|. A
-/ .*A
If u@v y ↔ u v y shouldn't these two agree?
($@"."1)(>"0 f)(,"1)2 2 1$'A'
2 0
2 2
2 2
0 0
n
($"."1)(>"0 f)(,"1)2 2 1$'A'
|domain error
| ($"."1)(>"0 f)(,"1)
I think the answer can be even more compact using the Evoke Gerund
conjunction:
T =: 2 2 $ +/`|:`|.`(-/ .*)
<"2 (T `: 0) i. 2 2
<"2 (T `: 0) i. 3 3
Jan-Pieter
2013/4/15 Linda Alvord
>
> A=:i.2 2
><"2 "."1 (>"0 f)(,"1)2 2 1$'A'
> T┐
> │2 4│0 2 │
> │0 0│1 3 │
> +---++
> │2 3│
A=:i.2 2
<"2 "."1 (>"0 f)(,"1)2 2 1$'A'
T┐
│2 4│0 2 │
│0 0│1 3 │
+---++
│2 3│_2 0│
│0 1│ 0 0│
L---+-
<"2 "."1 (>"0 f)(,"1)2 2 1$'B'
T-┐
│9 12 15│0 3 6│
│0 0 0│1 4 7│
│0 0 0│2 5 8│
+---+-+
│6 7 8 │0 0 0│
│3 4 5 │0 0 0│
│0 1 2 │0 0 0│
L---+---
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