Calypso and the future of D

[Walter Bright via Digitalmars-d]

On 1/26/2015 12:18 AM, Jacob Carlborg wrote:
> It works something like this:
>
> Given the C++ header file foo.h:
>
>      void bar(unsigned *);
>
> and the C++ source file foo.cpp:
>
>      void bar(unsigned *p) { }
>
> I want to call bar() from my D code in test.d:
>
>      void main() {
>        uint x;
>        bar(&x);
>      }
>
> Here's how to do it with Calypso:
>
>      module test;
>
>      modmap (C++) "foo.h";
>      import (C++) _ : bar;
>
>      void main() {
>        uint x;
>        bar(&x);
>      }
>
> To compile and link:
>
>      clang++ foo.cpp -c
>      ldc test.d foo.o
>
> Which generates the program 'test' which can be run.
>
> Calypso is not a separate tool. It's a fork of LDC which allows you to directly
> import/include a C++ header files and use the declarations from within D. No
> bindings or intermediate files are necessary.

Thank you. That really, really needs to go into the README.md, especially the 
last paragraph.