I also have to trouble to understand dyad {:: for rank-2 right box argument,
   ]a =. <"0 i. 3 3
+-+-+-+
|0|1|2|
+-+-+-+
|3|4|5|
+-+-+-+
|6|7|8|
+-+-+-+
   1{::a
+-+-+-+
|3|4|5|
+-+-+-+

I thought 1{::a would be 3 4 5, any explanation why it is not opened?

Henry Rich wrote:
The Dictionary's description of {:: is defective.  JfC chapter 17 has
some details.

Henry Rich
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of david alis
Sent: Sunday, September 16, 2007 7:09 AM
To: Programming forum
Subject: [Jprogramming] Vocabulary question concerning {:: - fetch

The following took me by surprise

      (1{:: 12 1$<1 2 3)-: 1{ 12 1$<1 2 3
1

as I have always understood that the following two expressions stand for the
same thing
1{data
1{::data

Does the Vocabulary entry for {::
http://www.jsoftware.com/help/dictionary/d523.htm
describe this situation?

Regards
David
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--
regards,
bill
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