From reading the manual section on ISO compliant Exception handling I'm trying
to understand how to use this in my code, so I wrote the following to try it out:
crashme :-
catch(
(
throw(error(formal, context))
),
E,
(
print_message(error, E),
fail
)
).
I expected some kind of message output, but what I got instead was:
2 ?- crashme.
ERROR: Unknown error term: formal
false.
Can someone clarify the syntax of how you might throw an error in pure Prolog code?
Steve
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