[mercury-users] Exception handling documentation.

Paul Bone pbone at csse.unimelb.edu.au
Thu Jul 17 14:14:19 AEST 2008

io.close_output throws an exception if bad stuff happens.  I don't see
any information in the language reference guide about exceptions, this
is probably a bug.

Alot of the io package returns errors as part of their return value.
Should this be consitant and always return a type that can be used to
check for errors?


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