I reading http://www.jsoftware.com/help/learning/32.htm
This chapter about boxed trees.
J have beatiful verb Fetch {::
This verb get any leaf by path.
I need verb for setting any selected leaf by path.
NB. Tree
] T =: 'the cat' ; 'sat' ; < 'on' ; < ('the';'mat')
ND. Get leaf by path
(2; 1; 1) {:: T
mat
How to change only one leaf in tree e.g. from "mat" to "xyz" without
re-creating the tree?
Thank you!
Sergey
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
