On Friday, 19 December 2014 at 01:59:05 UTC, Ellery Newcomer wrote:
On 12/18/2014 12:41 PM, Laeeth Isharc wrote:
I have a bunch of D functions I would like to make available to Excel (and possibly Julia) without having to write wrappers for each function
individually.


I've thought about refactoring the reflection parts of pyd into a reusable library for e.g. resurrecting RuD. Come to think of it, that would probably be necessary for supporting pypy.

It'd be a heck of a lot of work, though.



For your wrapper, you can probably do something like

extern(Windows) double vbwrap_test(double* inp,size_t num_inp,double* oup,size_t num_oup)
{
    return test(inp[0 .. num_inp], arg_oup[0 .. num_oup]);
}

with .dup sprinkled in as you see fit. And you don't need to explicitly copy the results back! Might need to take the ref off oup in test..

Thanks for the pointers, Ellery.

What was RuD?  RubyD?


There may be more efficient purer ways of doing this, but I
don't wish to spend time learning Excel internals/object models, and I know my route will work reasonably well).
ActiveX is not internal to Excel. Being a generic component interface, it's available over almost all microsoft technologies.

True, but how does that help me right a function I can call from a spreadsheet? I had understood ActiveX was for scripting the app, but not so useful if you want to write a function that can be entered in a cell formula. So it seems to me that ActiveX doesn't create an obvious way to avoid writing a C API wrapper and then VBA wrapper around that.

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