Re: Namespace bug?

• Subject: Re: Namespace bug?
• From: David Fang <email@hidden>
• Date: Sat, 19 Nov 2005 01:24:24 -0500 (EST)
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Hi,
	(Answer below)

> the cpp file looks like so
>
> #include "Comments.h"
>
> using namespace DOM;
>
> Comments::Comments()
> {
> }
>
> the error i get is the Comments can't be used without a type. Then I
> get told that it conflicts with a struct in AIFF.H (we include
> Carbon.h into all of our files by default. (i am working on a carbon
> project/Cocoa mixed project).
>
> However if  change my .cpp file to be....
>
> DOM::Comments::Comments()
> {
> }
>
> .. and add DOM:: to function declarations all is fine. Shouldn't the
> compiler recognize i am in a new namespace or do i have to qualify
> the declarations because of a global Comments?


That's not quite the way namespaces work.  When you declare/define
something it has to be *in* the namespace either by:
	Namespace::Class::Member(...)
or
	namespace Namespace {
		Class::Member(...) { ... }
	}

using declarations are for *looking up* references in other namespaces.
You can just write

namespace DOM {
	Comments::Comments() ...
}





David Fang

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