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From: bobduff@world.std.com (Robert A Duff)
Subject: Re: GOTO considered necessary (reworked)
Date: 1997/06/17
Message-ID: <EBxnu1.KMH@world.std.com>#1/1
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References: <5nn2fm$11dk$1@prime.imagin.net> <dewar.866304502@merv>
 <EBw1wL.MMx@world.std.com> <33A6A9C4.7B87@no.such.com>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1997-06-17T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <33A6A9C4.7B87@no.such.com>,
Spam Hater  <no.such.user@no.such.com> wrote:
>Even more (unfortunately) common: 
>  "An exception is basically a goto, so don't use exceptions."

An exception is even *worse* than a goto, since it's more powerful: It
jumps to a run-time-determined place, which can't necessarily be
determined by reading the source code.  And that place can be very far
away in the program (whereas a goto is local to a single subprogram).

Nonetheless, it's good to use exceptions when appropriate.

(It's interesting, though, that we're having a huge discussion about
fine-tuning the rules-of-thumb about exactly when it is, and is not,
appropriate to use goto.  But I haven't seen any such discussion about
exceptions.)

- Bob