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From: Brian Rogoff <bpr@shell5.ba.best.com>
Subject: Re: friend classes in ada95 (long)
Date: 2000/04/19
Message-ID: <Pine.BSF.4.21.0004191115030.25640-100000@shell5.ba.best.com>#1/1
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Date: 2000-04-19T00:00:00+00:00
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On 19 Apr 2000, Hyman Rosen wrote:
> Brian Rogoff <bpr@shell5.ba.best.com> writes:
> > There was some work at grafting interface MI into C++, indeed I believe
> > that GNU C++ may still support the "signature" proposal of Russo and 
> > Baumgartner. I thought that stuff was neat, and hope something similar
> > finds its way into the next Ada.
> 
> Signatures are being removed from the latest version of GNU C++.
> There is no need to "graft interface MI" into C++ because C++
> fully supports interface MI as it stands.

I disagree with your assertion. GNU C++ signatures allowed subtyping
*independent* of class hierarchy, and even allowed the extraction of 
a signature from an existing class using a "sigof" operator, something 
even Java doesn't have.

-- Brian