Re: 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.