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Date: Thu, 03 Jan 2002 18:07:42 -0500
From: Hyman Rosen <hyrosen@mail.com>
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Newsgroups: comp.lang.ada
Subject: Re: A case where Ada defaults to unsafe?
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Date: 2002-01-03T18:07:42-05:00
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Ted Dennison wrote:

> In article <3C34D252.4070307@mail.com>, Hyman Rosen says...
> 
>>But get away from C/C++ for a moment. In pure Ada terms, isn't it less safe
>>for the defaults to be "and" and "or" instead of "and then" and "or else"?
>>
> 
> Perhaps for ex-C programmers it is. But that's certianly not the only pitfall in
> the language for ex-C programmers.
> 
> If you were instead brought up to believe that boolean "and" is communitive,
> like they teach in math/logic classes, then it makes perfect sense. In that
> case, "and then" is just a nice shorthand for " then if ... then".


You haven't answered my question, though. Isn't the commutative semantic
less safe than the short circuit one?