I was wondering if using internal class typedef is possible using from an
object or only
when using class name?

for example:

class A { typedef int foo; };

...
    A a;

    A::foo B;   // thats legal
    a::foo a;    // is that legal also?
...

I looked into the standard and found no reference about it.
When I tried it in the Microsoft Visual c++ 6.0 it came back with the error:

"   error C2653: 'a' : is not a class or namespace name   "

the thing is that on microsoft documentation
there is nothing on that error ..  (there is help for c2652 and for c2654
but nothing for c2653 ..)

Any ideas?
---
[ comp.std.c++ is moderated.  To submit articles, try just posting with ]
[ your news-reader.  If that fails, use mailto:std-c++@ncar.ucar.edu    ]
[              --- Please see the FAQ before posting. ---               ]
[ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html              ]

Gutterman Zvika wrote:

> I was wondering if using internal class typedef is possible using from an
> object or only when using class name?

Only with a type name (the class name or a typedef to the
class).

> for example:
>
> class A { typedef int foo; };
>
> ...
>     A a;
>
>     A::foo B;   // thats legal

Correct

>     a::foo a;    // is that legal also?

No, it isn't.

--

Valentin Bonnard
---
[ comp.std.c++ is moderated.  To submit articles, try just posting with ]
[ your news-reader.  If that fails, use mailto:std-c++@ncar.ucar.edu    ]
[              --- Please see the FAQ before posting. ---               ]
[ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html              ]

Gutterman Zvika <zvik@cs.technion.ac.il> wrote:

> I was wondering if using internal class typedef is possible using from an
> object or only
> when using class name?
>
> for example:
>
> class A { typedef int foo; };
>
> ...
> A a;
>
> A::foo B;   // thats legal
> a::foo a;    // is that legal also?
> ...
>
> I looked into the standard and found no reference about it.
> When I tried it in the Microsoft Visual c++ 6.0 it came back with the error:
>
> "   error C2653: 'a' : is not a class or namespace name   "

Only class or namespace names can appear before "::". To quote the standard,
paragraph 3.4.3/1:

"During the lookup for a name preceding the :: scope resolution operator,
object, function, and enumerator names are ignored. If the name found is not
a class-name (clause 9) or namespace-name (7.3.1), the program is
ill-formed."

    -- Darin
---
[ comp.std.c++ is moderated.  To submit articles, try just posting with ]
[ your news-reader.  If that fails, use mailto:std-c++@ncar.ucar.edu    ]
[              --- Please see the FAQ before posting. ---               ]
[ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html              ]