Re: DIP61: redone to do extern(C++,N) syntax

[Walter Bright via Digitalmars-d]

On 4/28/2014 7:27 AM, Steven Schveighoffer wrote:

Consider this code:

module foo;

void func() {}

module bar;

extern(C) func();

module prog;

import foo;
import bar;

void main()
{
    func(); // error
    foo.func(); // ok
    bar.func(); // ok, uses C binding (no name mangling)
}

In this case, even though the C function is not mangled or in any other
namespace, the module can be used for unambiguous calling.

Right.

module foo;

void func() {}

module bar;

extern(C++, foo) void func(); // foo::func in C++ land

module prog;

import foo;
import bar;

void main()
{
    func(); // error
    foo.func(); // ALSO error

No, not an error. Why would it be?

    bar.func(); // Not error, BUT it's actually calling foo::func from C++ land!

That's right. Note that foo::func() is not the same as bar.foo.func().

}