From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.5-pre1 (2020-06-20) on
	ip-172-31-74-118.ec2.internal
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.5-pre1
Date: 7 Apr 93 12:42:25 GMT
From: cis.ohio-state.edu!news.sei.cmu.edu!firth@uunet.uu.net  (Robert Firth)
Subject: Re: and then
Message-ID: <1993Apr7.084225.8863@sei.cmu.edu>
List-Id: <comp.lang.ada>

In article <19930406.143008.278@almaden.ibm.com> jnestoriak@vnet.IBM.COM writes
:
>At a recent code inspection, someone suggested that I convert a
>series of and's to and then's "for performance".  I expect that

Don't do it.  The short-circuit forms "and then" and "or else" are
there to allow you to state that the two conditions must be tested
in the order in which they are written, eg

	if I in A'Range and then A(I) = 0 then ...

where the code would be incorrect with just "and".  Using them when
they are not necessary is just going to give you, or someone else,
one more maintenance headache.