Interfacing with C - calling member function of D struct from C?

[Adam D. Ruppe via Digitalmars-d-learn]

On Sunday, 25 June 2017 at 02:05:35 UTC, unleashy wrote:
> How would I call `addToBar` from C code?

You don't. Instead write it like:

struct Foo
{
     int bar;
}

extern(C) void addToBar(Foo* foo, int what) {
        foo.bar += what;
}


Then define it in C the same way and you call it the normal way 
from C.

But from D, you can UFCS call it:

Foo* foo = new Foo();
foo.addToBar(5); // cool


though I'd prolly just call it from D the same way you do from C 
too.