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From: heintze.peewee.enet.dec.com (Sieg Heintze)
Newsgroups: comp.lang.c++
Subject: Overloading [] to read and write to a bit array
Summary: wanted:  Example of using [] to access bit array and VGA Video Memory
Keywords: bit, array, c++, []
Message-ID: <13053@shlump.nac.dec.com>
Date: 3 Jul 90 16:35:31 GMT
Sender: newsdaemon@shlump.nac.dec.com
Organization: Digital Equipment Corporation
Lines: 19

Can someone provide an example of overloading the [] operator to read as well 
as write to a bit array?

There is a problem with writing to the bit array because your inclined to 
write a function of type &bit.  Of course this doesn't work.  

Actually, what I really want is to access my VGA video memory with the [] 
operater.  This would actually be a two dimensional array of 4 bit entities 
(nibbles).  Currrently, we have to do some pretty low level stuff everytime we 
have to access this video memory.   If C++ truly is OOP, we should be able to 
hide these ugly idiosynchrousies (sp?) inside the [] operator.

							Sieg

heintze@genral.enet.dec.com
Digital Equipment Corporation
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