Exception Handling

Matt Sergeant msergeant at messagelabs.com
Thu Jul 12 17:28:56 BST 2007

David Cantrell wrote:
> On Wed, Jul 11, 2007 at 05:01:02AM -0700, Ovid wrote:
>> And if the end-user forgets to check a return value, or checks it incorrectly (there are plenty of subtle ways this can happen), this returning false fails.  I only want to see code returning false if the failure is safe to ignore.  Otherwise, I want a proper exception.
> With that in mind, what do you think of my practice in Number::Phone et
> al of returning 1 to mean "yes" (eg yes, this is a mobile number), 0 to
> mean "no" (no, it's not a mobile number) and undef for "dunno"?

That's not error handling, that's a booleanish function. Returning "no" 
isn't an error condition.


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