Traps as exceptions

Question

The trap mechanism in Mumps has similarities to the exception mechanism in many other language.

Most examples I have seen of trap usage is for catching unintentional errors.

Is there also a way intentionally trigger an error, which can be caught by a trap, in a way that is similar to throwing an exception?

I am working with GT.M V7.0. I’m learning about traps from here:

score 2 · Accepted Answer · edited May 13 '22 at 13:01

2

You can do this by setting the $ECODE variable.

This is YottaDB but I think it will work for GT.M too.

SET $ECODE=",U13-User defined error trap,"

A simple thing that should work too: S X=1/0

edited May 13 '22 at 13:01

Lii

answered May 13 '22 at 11:23

Jens

Ah, by settings `$ECODE` how simple! Thanks! – Lii May 13 '22 at 13:00
1

It seems like settings [`ZMESSAGE`](https://docs.yottadb.com/ProgrammersGuide/commands.html#zmessage) has a similar effect. – Lii May 13 '22 at 13:01

1 Answers1