PortingOverview

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Porting from C

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• Porting from C gotchas

Interfacing D with an existing codebase

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• C interfacing is simple and complete - D can call C, and C can call D
• converting C header files to D under Windows
• converting C and Objective C headers to D under OS X/Linux/FreeBSD
• Linking with C gotchas
• C++ interfacing is a key priority of the D core team but much can already be done - in fact more than is described here
• Calypso: a pre-alpha very early stage project to interface D with C++ under clang
• PyD creates seamless interoperation between D and CPython, including for numpy arrays. "It just works". Make sure you visit the github code, and not the old version up at bitbucket.
• Other options are to use cython wrappings to connect to D, or to write in D directly to the Python API. There are examples of this in the PyD examples directory within PyD
• LuaD creates a simple interface between D and Lua

D calling embedded Python

void main() {
    auto context = new InterpContext();
    context.a = 2;
    context.py_stmts("print ('1 + %s' % a)");
}
 

Lua D example

import luad.all;

void main()
{
    auto lua = new LuaState;
    lua.openLibs();

    auto print = lua.get!LuaFunction("print");
    print("hello, world!");
}