I'm posting this for a friend who has problems getting his postings
out. If you want to reply directly don't use my address, use her
address (see below). Thanks.



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I'm not sure whether I understood the namespace concept thoroughly.

If I define two namespaces:

   namespace X { ... class A { ... }; .... }
   namespace Y { ... class A { ... /* another definition */ ... }; ... }

How can I use them?

   using namespace X; // using-directive
   using Y::A;  // using-declaration

Does this cause an ambiguity for class A? I guess it does, but I'm not sure.

The only hint I found in Bjarne Stroustrup's proposal was the following:

"If more than one local declaration or using-declaration declares a name,
all those names must refer to functions."

Does this rule aplly? In the above example I have a using-DIRECTIVE and
a using-declaration both declaring the name of CLASS "A".

Does anybody know whether my example will cause an error or not?


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In article <24nf19$c42@horus.mch.sni.de> klaus@diamant.uucp writes:

> If I define two namespaces:

>    namespace X { ... class A { ... }; .... }
>    namespace Y { ... class A { ... /* another definition */ ... }; ... }

> How can I use them?

>    using namespace X; // using-directive
>    using Y::A;  // using-declaration

> Does this cause an ambiguity for class A? I guess it does, but I'm not sure.

Yes, but not until you actually try to use class A.

--
    --Andrew Koenig
      ark@research.att.com