For NuVoc purposes I'm documenting J's error messages...
Have you ever seen any of the following error messages in your J session
(j602 onwards)?
allocation error
break
file access error
input interrupt
non-unique sparse elements
read-only data
stop
system error
If so, can you furnish a simple sample of "normal" J code that causes the
said error?
I specify "normal" because I don't want samples which rely on constructing
a pathological noun as a core image in hex and shoe-horning it into J by
use of 3!:2, or use of the "darker" Foreigns, especially undocumented ones.
I want something which could conceivable arise by bona-fide J usage by an
innocent newbie, ill-conceived though it might seem to someone more
experienced.
Having said that, it probably takes deep knowledge of the J source to know
what might trigger some of these errors.
It would also be nice to know which of the above error messages can't
possibly arise in normal usage. (But consider it "cheating" to use 13!:8 to
signal any given message: assume I know how to do that.)
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