On Thursday, 28 January 2016 at 04:26:26 UTC, Taylor Hillegeist wrote:
> Just curious... I had a thought that perhaps since Objective C was a replacement for Pascal on the mac. that they might have the same interface. but I'm not savvy enough with fpc to figure out how to try it.

As said in the other posts you can link dlls or even object files produced by a D compiler. There is the D runtime to initialize and finalize, a particular attention must be put on te calling conventions, also some stuff like strings must be passed using toStringz() or received with fromStringz() (and Pchar() in pascal)...

One thing that's interesting is to develop let's say the GUI with Lazarus and use a core made in D. When you'll debug your application in Lazarus, and if an exception is raised within the object or the dll made in D, the integrated debugger will break and display the D source directly in Lazarus.

The first time it happend to me, I was **totally mesmerized**...

(I even made a post here: https://forum.dlang.org/thread/aeiwsnmsrchgmkbllqid@forum.dlang.org "//debugger breaks here": it was the Lazarus debugger who displayed a D source).

But actually it's totally logical, it's just the DWARF debug info that indicates the source name...