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From: ddb@ns.network.com (David Dyer-Bennet)
Newsgroups: comp.lang.c
Subject: Re: comma operator:  keep away?
Message-ID: <1317@ns.network.com>
Date: 24 Apr 89 21:22:12 GMT
References: <19913@iuvax.cs.indiana.edu> <10092@smoke.BRL.MIL> <19926@iuvax.cs.indiana.edu> <10098@smoke.BRL.MIL>
Reply-To: ddb@ns.UUCP (David Dyer-Bennet)
Organization: Terrabit Software
Lines: 18

In article <10098@smoke.BRL.MIL> gwyn@brl.arpa (Doug Gwyn) writes:
:Ok, I picked a bad example.  However, many macros need to accomplish
:more than one thing and cannot do so without the aid of some such
:trickery as
:	((expr1) & 0 | (expr2))
:which is more simply expressed as
:	(expr1, expr2)

Which is an example of the weakness of the macro facility in C (one of the
most light-weight macro facilities I've ever had foisted on me).  Without
taking a position on the general value of the comma operator -- the correct
solution to this one is to improve the macro facility, not provide a
way to kludge some (but not all) cases.
-- 
David Dyer-Bennet, ddb@terrabit.fidonet.org, or ddb@ns.network.com
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