Re: Exception + multiple inheritance question...
barcaroller wrote:
"Bo Persson" <bop@gmb.dk> wrote in message...
Then it isn't caught, because it is not an exception_base. The
inheritance goes in the other direction.
Exactly; that is why I think that the author's catch clause is not
enough. So what would be an appropriate catch clause? The code
below does not strike me as correct; why even bother deriving from
std::exception and boost::exception?
catch (exception_base& e)
{
// take some action
}
catch (std::exception& e)
{
cerr << e.what() << endl
}
catch (boost::exception& e)
{
if (string const* fn=get_error_info<string>(e))
cerr << *fn << endl;
}
I don't know the intention of the author - could be to combine the
functionality of both exception classes, or just to show a cool
example.
Your three catch clauses will catch anything derived from either of
the base classes. Seems kind of ok to me (but a bit weird to have both
the base classes and the derived class in the list).
Bo Persson
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