Re: Is there any good reason why C++ namespaces are "closed" in D?

[Walter Bright via Digitalmars-d]

On 7/29/2018 1:52 PM, Manu wrote:

On Sun, 29 Jul 2018 at 05:10, kinke via Digitalmars-d
<digitalmars-d@puremagic.com> wrote:

[...]
so that a straight C++ namespace => D module hierarchy mapping
would probably be required in the general case:

```
// cppns/package.d
module cppns;
extern(C++, "cppns") { void foo(); }

// cppns/nested/package.d
module cppns.nested;
extern(C++, "cppns") extern(C++, "nested") { void foo(); }
```

It's beautiful!

You must have missed my other post:

====================================================

Here's another method:

------
extern (C++, ns) { int foo() { return 1; } }

mixin template X()
{
  extern (C++, ns) { int bar() { return 2; } }
}

mixin X!() x;

-------

and another:

-----
extern (C++, ns) { int foo() { return 1; } }

struct S
{
  extern (C++, ns) { int bar() { return 2; } }
}
----