Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!odi!benson
From: benson@odi.com (Benson I. Margulies)
Newsgroups: comp.lang.c++
Subject: Why isn't ostream::osfx/opfx virtual?
Message-ID: <1989Dec18.141217.19738@odi.com>
Date: 18 Dec 89 14:12:17 GMT
Reply-To: benson@odi.com ()
Organization: Object Design Inc., Burlington, MA
Lines: 20

In 2.0, ostream has two functions osfx and opfx that are used to give
the stream control (for buffering purposes) before and after output.
They aren't virtual.

As per my previous message, I need to implement some specializations
of ostream that are sensitive to line boundaries. osfx would serve
my purposes fine -- if it were virtual.

As it is, if I implement my own osfx, it isn't called when
ostream::whatever does its thing, so its no use at all.

I'm hesitant to add the "virtual", since this version will ship to our
customers, and I'd hate to be InComPatIble.

If the folks from AT&T would bless the addition of virtual in this
spot, I could make the change with a clear conscience.


-- 
Benson I. Margulies