L: all the time, especially in teaching. The beginners tend to get rank
and boxing level confused. The recurring question is "what should you
apply this verb on", and if the answer is 'k-cells', you use "k, while
if it is 'on the contents of innermost boxes', you use L:0. Last year
we had a project (analyzing the text of Hamlet) that ended up with a
level-3 boxed array, and L:2, L:1, and L:0 were all meaningful,
depending on whether you wanted to work on a word, a line, or a speech.
&.> is usually better supported in the interpreter, so I don't use L:0
in my own code unless the boxing is heterogeneous.
S: I don't use much.
L. is also rare.
{:: is indispensable when you need it. > 1 { > 2 { y is just harder
to read than (2;1) {:: y . It's a pity that 0 {:: scalar fails, or I
would use {:: more.
Henry Rich
On 1/13/2013 1:09 AM, km wrote:
Have you used members of this family? What for? --Kip Murray
Sent from my iPad
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm