Re: extern(C++, NS)

[Walter Bright via Digitalmars-d]

On 11/28/2015 9:17 PM, Manu via Digitalmars-d wrote:

On 29 November 2015 at 14:57, Walter Bright via Digitalmars-d
<digitalmars-d@puremagic.com> wrote:

D does not support C++ semantics. You cannot split namespaces into multiple
files in D, nor can you add symbols to an existing namespace. For namespace
NS, all the declarations in NS have to be in one file and between the { },
just like any other scope in D.

Then the feature fails. You can't put the entire STL in one file.
C++ doesn't namespace per file, it generally namespaces per project...
so this is the common case; every module define symbols in the same
C++ namespace.

You can also do this:

extern (C++, NS)
{
    mixin(import("file1.d"));
    mixin(import("file2.d"));
}

Maybe a special case for C++ namespaces?

Please, no. Unending confusion and bugs will result.

C++ tends to namespace everything with the same namespace, and that
means either I implement the entire C++ library in a single module

You only need the declarations, not the implementations.