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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Exceptions
Date: Thu, 13 Dec 2007 20:36:00 -0600
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Date: 2007-12-13T20:36:00-06:00
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"Ray Blaak" <rAYblaaK@STRIPCAPStelus.net> wrote in message
news:u4pem6r3t.fsf@STRIPCAPStelus.net...
...
> Mind you, with the use of a non-garbage collected language like Ada, one
would
> need to do cleanups with exceptions more often, but that does not imply
the
> need to do specific exception handling.

I generally agree with you, but there is one case where you need to do
specific exception handling: when you need to change one exception into
another.

For instance, the specification for Ada.Text_IO says that a Get of an
integer that is out of range raises Data_Error. If you write that code in
Ada (and I think most of us implementers did), you probably had to handle
Constraint_Error somewhere and then raise Data_Error instead. I find that
this sort of handler is fairly common if you use user-defined exceptions in
your packages.

                         Randy.

P.S. Ada programmers *raise* exceptions. The only thing that Ada programmers
"throw" is the trash into the trash can... ;-)