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From: dewar@cs.nyu.edu (Robert Dewar)
Subject: Re: Side-effect arithmetic again [was: Ada ... in embedded systems]
Date: 1996/03/23
Message-ID: <dewar.827599280@schonberg>#1/1
X-Deja-AN: 143880364
references: <826571250.140@assen.demon.co.uk> <dewar.827413120@schonberg>
 <EACHUS.96Mar21184540@spectre.mitre.org> <827432438.26126@assen.demon.co.uk>
 <4ivnr9$86o@dayuc.dayton.saic.com>
organization: Courant Institute of Mathematical Sciences
newsgroups: comp.lang.ada
Date: 1996-03-23T00:00:00+00:00
List-Id: <comp.lang.ada>

John said

"Horrors! This assumes that Standard.Integer subsumes all possible ranges
of 'Pos values for all discrete types (enumeration, integer, modular).
A very dubious assumption!  What about Long_Long_Integer?  The long-term
reusability of this package is problematic."

Nope, not horrors at all. Increment should mean increment, not add, if
you want to add, please use the + operator which is just fine for
this purpose.

I think it actively HELPS maintainability that increment accepts only
small positive values.

I also think that the extnsion of these operators, dubious in the first
place, to weird cases like mod is a disservice. I can put up with += in
C but I find the use of things like %= and ^= to be tortured syntax,
which I prefer NOT to import in any case.

I still think the whole business is a tempest in a teapot, and do not think
that the use of any of these packages helps in reading, maintaining, or
even writing code.