$A=: ,&]/ svA=. i. 4 4 3
16 3
svA-:4 4$A
1
On 4/9/07, David Vincent-Jones <[EMAIL PROTECTED]> wrote:
Obviously I didn't fully explain myself ... try again!
A=: ,&]/ i. 4 4 3
$A
16 3
Now I would like to reverse A back to $ 4 4 3
David
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED] On Behalf Of David Vincent-Jones
Sent: Sunday, April 08, 2007 17:43
To: 'Programming forum'
Subject: RE: [Jprogramming] Singleton Reduction
How would one reverse that reduction?
$ ,&]/ i. 4 4 3
16 3
Assuming one knew the original form, from 16 3 back to 4 4 3
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED] On Behalf Of Dan Bron
Sent: Sunday, April 08, 2007 16:40
To: 'Programming forum'
Subject: RE: [Jprogramming] Singleton Reduction
Leigh wrote:
> I've noticed that with a rank adverb (i.e., ,"_1 / ) your prefered
> solution works.
Raul countered:
> $,/"_1]i. 1 2 3
> 1 6
Ok then:
$ ,&]/ i. 1 2 3
2 3
$ ,&]/ 1$'a'
By definition, ,&]/ and ,/ can't differ; but since ,&]/ isn't
supported by special code, it doesn't suffer from the bug
indicated by Roger. OTOH, since it isn't supported by special code, it is
not as efficient as ,/ . But it's nearly as terse, equally
understandable, and is, until the next release, more reliable than its
optimized counterpart.
-Dan
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--
Devon McCormick, CFA
^me^ at acm.
org is my
preferred e-mail
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