Newsgroups:	comp.lang.c++,comp.os.msdos.djgpp
From:	"A. Jans-Beken" <jabe AT oce DOT nl>
Subject:	How to program a set of bits?
Message-ID:	<34462916.7762@oce.nl>
Sender:	news AT oce DOT nl (The Daily News @ nntp01.oce.nl)
Cc:	jabe AT oce DOT nl
Organization:	Océ-Nederland B.V.
Mime-Version:	1.0
Date:	Thu, 16 Oct 1997 14:47:50 GMT
Lines:	21
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

In a program i'am writing I have a class like this:

class PROPS {
   unsigned long set_of_32_bits;
   ...
   }

Now I want to have an operator '[]' so I can program:

PROPS flags;
flags[2] = FALSE;
flags[4] = flags[31] = TRUE;
flags[6] = flags[3];

Please note that this is not the famous BITVECT example that can be
found in many books about c++. I do not want to use a pointer to a bit
set because the pointer takes up 4 bytes extra and i'am planning to use
a huge array of PROPS (and related classes).

please respond via e-mail
thanx

- Raw text -