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To: Charles Swiger <cswiger@mac.com>
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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: 01 Feb 2005 14:39:58 -0500
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cc: Jonathon McKitrick <jcm@FreeBSD-uk.eu.org>
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Subject: Re: Unix equivalent of a variant??
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Charles Swiger <cswiger@mac.com> writes:

> On Feb 1, 2005, at 11:43 AM, Jonathon McKitrick wrote:
> > I need the equivalent of a variant, however.  A hold-everything
> > variable
> > that can be any type in C/C++.  Is there something already out there
> > I can
> > use or should I just roll my own?
> 
> Your question probably belongs on comp.lang.c, but the cannonical way
> of handling "data of any type" is a memory buffer and a (void *).
> Watch out for host data alignment restrictions.

Or depending on the intent, a union, which will get the compiler to
take care of alignment.

Generally, though, avoiding typechecking is a hack best avoided...


-- 
Lowell Gilbert, embedded/networking software engineer, Boston area
		http://be-well.ilk.org/~lowell/