Devon,
I should have offered a cavaet with that trick. If 4!:4 can't figure out the
script in which the name was defined, it'll return _1 . Of course, that
picks the last item out of 4!:3 , so it appears as if the name was defined in
the last script loaded.
In your case, the last script loaded was ~Extras/util/browser , probably
because you pressed F1 or CTRL+F1 . That script (at least on my system)
does not define the name each :
+./ 'each' E. fread jpath '~Extras\util\browser.ijs'
0
There are several cases in which 4!:4 can fail to find the name-defining
script. The most common case is: there is no such script. That happens when
you define the directly in the IJX session, e.g.:
rp =: tofoldername_jijs_
rp (4!:4{.;:'each') {:: 4!:3''
+----------------+
|~Main\stdlib.ijs|
+----------------+
each =: "0
rp (4!:4{.;:'each') {:: 4!:3''
+-----------------+
|~Main\strings.ijs|
+-----------------+
rp {: 4!:3''
+-----------------+
|~Main\strings.ijs|
+-----------------+
4!:4{.;:'each'
_1
Other cases where 4!:4 can "fail" include locale/locative discrepancies.
The best way to debug this problem is to open a fresh, virgin J session,
without your personal startup script. Check the definition of each_z_ (and
each without the locative qualifier). If it is &.> then convince yourself
that browser.ijs is not the offender by pressing F1 and checking the
defnition of each again.
If, in either case, it turns out a script packaged with the J system is at
fault, please download and install the newest base library. I believe you
previously installed JAL; you may use that to upgrade.
If a J script is not at fault, then set DISPLAYLOAD_j_=:1 and load your
personal startup script. Now check the definition of each . If it is &.>
, you have no worries; the problem was transient (you probably redefined each
by hand in the other session).
But, if each is now "0 , since you set DISPLAYLOAD , you'll have a list
of all your personal scripts which are loaded at startup; check those. You
might find "Find in Files" (particularly with the regex option) useful.
-Dan
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