From: Luc Heinrich <luc@...>
Date: 2009-01-17T19:31:02+09:00
Subject: Re: [FFI] how to bind to a function with variable number of args

On 16 janv. 09, at 18:00, Ollivier Robert wrote:

> I'm looking at ruby-ffi 0.2.0 with MRI 1.8.7 (haven't tried with
> rubinius yet) and I can get to attach to setproctitle(3) defined like
> this:
>
>     void
>     setproctitle(const char *fmt, ...);

This would be defined like this:

module LibC
   extend FFI::Library
   attach_function : setproctitle, [:string, :varargs], :void
end

And then used like this:

LibC.setproctitle("%d-%d", [:string, "foo", :int, 42])

-- 
Luc Heinrich - luc@honk-honk.com