Date: 01 Feb 2005 14:39:58 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Charles Swiger <cswiger@mac.com> Cc: freebsd-questions@freebsd.org Subject: Re: Unix equivalent of a variant?? Message-ID: <443bwgm5m9.fsf@be-well.ilk.org> In-Reply-To: <62f97b906f93154c70f01d754d50083c@mac.com> References: <20050201164337.GA78979@dogma.freebsd-uk.eu.org> <62f97b906f93154c70f01d754d50083c@mac.com>
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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/
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