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Re^6: Use of "die" in OO modules

by theguvnor (Chaplain)
on Jan 27, 2007 at 23:59 UTC ( #596921=note: print w/replies, xml ) Need Help??


in reply to Re^5: Use of "die" in OO modules
in thread Use of "die" in OO modules

Are you saying that if I eval { die MyExceptionClass->new(...) }; that the $@ variable will contain the instance of MyExceptionClass? Wow. It never dawned on me that that might be the case... This changes everything!

[Jon]

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Re^7: Use of "die" in OO modules
by adrianh (Chancellor) on Jan 28, 2007 at 21:31 UTC
    Are you saying that if I eval { die MyExceptionClass->new(...) }; that the $@ variable will contain the instance of MyExceptionClass?

    Exactly ;-) From perldoc die:

    die() can also be called with a reference argument. If this happens to be trapped within an eval(), $@ contains the reference. This behavior permits a more elaborate exception handling implementation using objects that maintain arbitrary state about the nature of the exception. Such a scheme is sometimes preferable to matching particular string values of $@ using regular expressions.

      Awesome.. I tried it and I like it!

      Now I just wish that something like this:

      catch (ThisClass $e) {...} catch (ThatClass $e) {...}
      was built into Perl!!

      [Jon]

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