Implement "unfetch" verb set, such that it
relates to {:: as } to { .
For example,
'qq' 1 set 1;2;3
+-+--+-+
|1|qq|3|
+-+--+-+
('qq';1 2 3) (1;0) set 1;(2;3);4
+-+--------------+-+
|1|+----------+-+|4|
| ||+--+-----+|3|| |
| |||qq|1 2 3|| || |
| ||+--+-----+| || |
| |+----------+-+| |
+-+--------------+-+
'qq' (1;0;2 1) set 1;((<"0 i.3 4);3);4
+-+----------------+-+
|1|+------------+-+|4|
| ||+-+--+--+--+|3|| |
| |||0|1 |2 |3 || || |
| ||+-+--+--+--+| || |
| |||4|5 |6 |7 || || |
| ||+-+--+--+--+| || |
| |||8|qq|10|11|| || |
| ||+-+--+--+--+| || |
| |+------------+-+| |
+-+----------------+-+
(1;0;2 1){:: 'qq' (1;0;2 1) set 1;((<"0 i.3 4);3);4
qq
See also
http://www.jsoftware.com/pipermail/programming/2006-August/002970.html
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