Say we have a file ~home/script.jis with the following contents:
a=. 'bar'
and start a J session:
a=. 'foo'
verb=. 0 :0
a=. 'baz'
)
a
foo
0!:0 <jpath '~home/script.ijs'
a
bar
0!:0 'verb'
a
bar
NB. Version info
9!:14''
j901-f/j64/linux/release/GPL3/voidlinux.org/2020-06-25T01:06:25
JLIB
9.01.24
So it looks like the (0!:0) foreign works within the calling private namespace
when executing files, but in contrast, starts a new private namespace when
executing nouns.
Is my interpretation correct? I assume this behaviour is documented on the
wiki, but my searches have failed me.
Anyway, (0!:0)'s behaviour of muning the caller's private namespace is used to
great effect in profile.ijs, by looking for a ~home/.jprofile.ijs to let users
override the directories in SystemFolders_j_.
Is the execution of (0!:0 'noun') equivalent to (3 :0) when the string contents
are the same?
Cheers,
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