Remember,
x {:: y
unboxes the selected atom, if an atom is selected; so it's not a general
replacement for
(<x) { y
Henry Rich
On 5/29/2014 9:45 AM, Alex Giannakopoulos wrote:
OK, sorry for the noise, just saw it tagged to the side of the main body of
the NewVoc page. (As the "map" verb)
I daresay, though, that something which most people think of as the most
widely used functionality in array programming could have a bit more
prominent pride of place.
On 29 May 2014 14:13, Alex Giannakopoulos <[email protected]> wrote:
Ah, that's cool Michael, so that
{::
is a shorthand or special code or something for
] {~ [: < [
is it?
Handy... should be added to Voc/NewVoc
On 29 May 2014 13:38, Michael Dykman <[email protected]> wrote:
For the sake of completeness:
1 3 {:: i. 4 4
7
] s=.> 1 3; 2 1
1 3
2 1
s {:: i. 4 4
7 9
On May 29, 2014 8:18 AM, "Alex Giannakopoulos" <[email protected]>
wrote:
Hm, nice that, especially the intersection feature
(<2 1;1 3) { i. 4 4 NB. Select rows 2&1, columns 1&3
9 11
5 7
Maybe it's time that NewVoc was linked to the Help page in place of Voc.
Certainly would have saved me a lot of time on more than one occasion.
Will certainly be checking that first from now on...
On 29 May 2014 12:09, Henry Rich <[email protected]> wrote:
It's in NuVoc:
http://www.jsoftware.com/jwiki/Vocabulary/curlylf#dyadic
Henry Rich
On 5/29/2014 6:44 AM, alexgian wrote:
Oops, scratch that, just saw it.
On 29 May 2014 11:39, alexgian <[email protected]> wrote:
Thanking you kindly, sir, that's a relief!
Seems to work at all ranks, too.
I don't think it's in the Voc (under { ), or my eyesight is getting
really
bad. Should be, IMHO, fairly crucial thing for an array-programming
language.
On 29 May 2014 11:23, Kip Murray <[email protected]> wrote:
i. 4 4
0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15
(<2 1) { i. 4 4
9
On Thursday, May 29, 2014, alexgian <[email protected]>
wrote:
If I want to index into a (rank 2) array to get the element
usually
called
the (i,j)th in the big, bad world, is there a better way to do it
than
this, which I currently use?
idx =: (1 { [) { ] {~ 0 { [
2 1 idx 4 4 $i.16
9
I notice that if { takes an array as left arg, it merely returns
the
given
rows of that array, rather than the required indexed element.
So I can't do, for instance, (2 1) { 4 4 $i.16 and get what I
want
Furher, I wander if there is a more generic way of writing this so
that
it
would work automatically for rank-3 arrays and greater.
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