org.freedesktop.Hal.Manager.GetAllDevices introspection format "ao"

[Richard Hughes]

On Sat, 2006-07-22 at 10:55 -0400, David Zeuthen wrote:
> On Sat, 2006-07-15 at 20:42 +0100, Richard Hughes wrote:
> > I've been auditing the introspection stuff used in HAL, and I've found
> > an oddity:
> > 
> >   <interface name="org.freedesktop.Hal.Manager">
> >     <method name="GetAllDevices">
> >       <arg name="devices" direction="out" type="ao"/>
> >     </method>
> >     ....
> > 
> > Why are we using 'ao' (array of pointer objects) rather than 'as' (array
> > of strings) as we just get back a list of udi's?
> 
> Because they in fact are object paths! Which happens to be strings, but
> in a high-level language, the D-BUS bindings may be smart and give you
> the reference to a proxy for the object instead of a string.
> 
> Does that make sense?

Yes, gotcha, thanks.

Richard.