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From: Kilgallen@SpamCop.net (Larry Kilgallen)
Newsgroups: comp.lang.ada
Subject: Re: Whether to raise exception or End_of_List function
Date: 21 Nov 2001 11:01:04 -0600
Organization: LJK Software
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References: <slrn9vnh96.55u.randhol+abuse@kiuk0156.chembio.ntnu.no>
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Date: 2001-11-21T11:01:04-06:00
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In article <slrn9vnh96.55u.randhol+abuse@kiuk0156.chembio.ntnu.no>, Preben Randhol <randhol+abuse@pvv.org> writes:

> My question is which is the better solution; Exception or a End_of_List 
> function and which would have fewer side effects?

Exceptions are supposed to be rare events.  In many applications
reaching the end of a list is fully expected and not necessarily
rare.

Exception processing can take significant overhead, since compiler
implementors know it will be rare.