extern(C++, NS)

[Timon Gehr via Digitalmars-d]

On 11/29/2015 05:57 AM, Walter Bright 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.
>

It's about namespace overloading.
The following works, even though no scopes are actually extended with 
new symbols.

module other;
template foo(){ // a scope
     void foo(){}
}
// ----
import other;
alias foo=other.foo;
template foo(){ // another scope
     void foo(int){}
}
void main(){
     foo(); // successful
     foo(2); // ditto
}