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From: ag4@pucc-h (Angus Greiswald the fourth)
Newsgroups: net.lang.c
Subject: Re: Set type
Message-ID: <1865@pucc-h>
Date: Thu, 21-Feb-85 11:23:09 EST
Article-I.D.: pucc-h.1865
Posted: Thu Feb 21 11:23:09 1985
Date-Received: Mon, 25-Feb-85 15:22:08 EST
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> C has a union operator ("|"), an intersection operator ("&"), and even
> a set difference operator ("&~").  Of course, this approach limits you
> to sets which contain no more elements than are contained in an integer,
> but this limitation also tends to apply to PASCAL sets.

Well, that doesn't limit you, just like it *doesn't* limit you in Pascal.
Use an array of ints.  Of course, then the code can get crufty.  That's
why sets are usually so inefficient in Pascal.  They are an interesting
idea, though.  Can anyone think of a good example where using sets seems
to be the best solution?  If so, perhaps we could work at coming up
with a good set of macros to handle sets right.

--
Jeff Lewis                                                     vvvvvvvvvvvv
{decvax | hao | cbosgd | masscomp | uiucdcs | sequent | ihnp4}!pur-ee!lewie
                                                               ^^^^^^^^^^^^