This is what I had in mind:
(g =. '>@{&paths'&apply f.) NB. instead of (g=. >@{&paths))
'>@{&paths'&(128!:2)
paths=. 2 ([: (|. each) (;~ 0$0) , (<\@:+ i.)) 7
g 4
4 3 2
g 3 2 $ 2 4 1 5 0
2 0 0 0
4 3 2 0
0 0 0 0
5 4 3 2
0 0 0 0
2 0 0 0
g 8
8 7 6 5 4 3 2
paths=. 3 ([: (|.
On Sun, Jul 29, 2012 at 11:59 PM, Ian Shannon
wrote:
> There is another solution.
It's often helpful, in this kind of statement, if you say what is being solved.
> Make your noun into a verb as in:
...
Here's one approach for making a noun into a verb:
noun"_
Or, if you are concerned about
There is another solution.
Make your noun into a verb as in:
NB. just a few helpers, could be defined later.
pathA =: [: (|. each) (;~ 0$0) , (<\@:+ i.) NB. calculation of the data
pathB =: <\ i. NB. Either monadic or dyadic hook, possible
pathC =: (2 pathA 7)"_
On Sun, Jul 22, 2012 at 2:51 PM, David Vaughan wrote:
> So there's no way to achieve it with a tacit verb?
There's many ways.
I'm fond of:
do bind 'name'
In other words, instead of
paths =: \:~&.> (;~ 0$0) , <\ 2+i.7
g =. >@{&paths
use
g=: >@{&(do bind 'paths')
or, perhaps
g=:
.com
Subject: Re: [Jprogramming] Verbs that contain nouns
If the code in the string is altering the content of the string, you get
non-von Neuman programming, with (sometimes) very neat
consequences.
Powerful, yes, but equally dangerous and sometimes even hardly predictable.
R.E.
g-boun...@forums.jsoftware.com
> [mailto:programming-boun...@forums.jsoftware.com] Namens Marshall
> Lochbaum
> Verzonden: zondag 22 juli 2012 22:05
> Aan: programm...@jsoftware.com
> Onderwerp: Re: [Jprogramming] Verbs that contain nouns
>
> There is, in fact. Simply execute the nam
There is, in fact. Simply execute the name you want to evaluate:
g =. ] >@{ ".@:('paths'"_)
'paths'"_ is the verb that always returns the string 'paths', so
".@:('paths'"_) is the verb that always returns the current value of
paths.
The "strings are code" mentality feels ugly to someone used to C o
Hey Rick,
Are you here in Toronto? I think a large group is meeting up at the
Spotted Dick Pub, across from the Marriott near the Conference location.
I will be there a little later, probably around 8pm. Hopefully we'll see
you there.
Ken
On Sun, Jul 22, 2012 at 1:48 PM, Ric Sherlock wrote:
>
http://jsoftware.com/help/learning/11.htm
Learning J
Chapter 11: Tacit Verbs Concluded
11.5 Parametric Functions
The following example shows the consequences of nouns being evaluated
and verbs not in an expression for a tacit verb.
A curve may be specified by an equation such as, for e
Thanks.
So there's no way to achieve it with a tacit verb?
On 22 Jul 2012, at 18:48, Ric Sherlock wrote:
> When you assign a Tacit verb to a name the value of the nouns in the
> definition are "compiled" in to the tacit definition. If you use an
> explicit definition the noun will be reevaluate
Ric,
Thanks for that fact, which I never new.
On Sun, Jul 22, 2012 at 1:48 PM, Ric Sherlock wrote:
> When you assign a Tacit verb to a name the value of the nouns in the
> definition are "compiled" in to the tacit definition. If you use an
> explicit definition the noun will be reevaluate d each
When you assign a Tacit verb to a name the value of the nouns in the
definition are "compiled" in to the tacit definition. If you use an
explicit definition the noun will be reevaluate d each time.
On Jul 22, 2012 1:32 PM, "David Vaughan" wrote:
> I have a noun called paths, whose value changes a
I have a noun called paths, whose value changes at various points, and a verb g
that uses paths. The problem is, it only works for the initial value of paths.
paths =: \:~&.> (;~ 0$0) , <\ 2+i.7
paths
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