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From: "Mark Lundquist" <no.spam@getalife.com>
Newsgroups: comp.lang.ada
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Subject: Re: Ada2005
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"Stephen Leake" <stephen.a.leake.1@gsfc.nasa.gov> wrote in message
news:u8zc76k04.fsf@gsfc.nasa.gov...
> "Mark Lundquist" <no.spam@getalife.com> writes:
>
> > Actually, I can take back the last part of that.  Flat class-oriented
> > languages that allow classwide object declarations (e.g. static data
members
> > in C++ and Java) are no better off in this way than Ada.
>
> If you are saying that C++ has a flat namespace, I think you are
> wrong. C++ "namespaces" provide at least one layer below global, and I
> think they can be nested.

I know... however, C++ still has the almost-flat *scoping* of C, and while
C++ namespaces are hierarchial, all elements of the hierarchy are public,
resulting in flat visibility at the top ("header file") layer (compare with
Ada, where a package spec may occur within a body (textually or as a
subunit) or as a private child).

My point is, given a class declared in a header file, any other source file
may #include that file, reference the class, create and manipulate instances
of it, diddle with any diddleable static class members, and call the class'
static functions.

C++ namespaces impose a naming regime, but provide no encapsulation of
classes or objects.

Cheers,
Mark