Re: [Vala] Problem with references

[Dominique Würtz <housirer gmx de>]

Jürg Billeter schrieb:
> On Fre, 2006-08-25 at 18:16 +0200, Dominique Würtz wrote:
>   
> > Jürg Billeter schrieb:
> >     
> > > In that concrete case it would probably be best to just mark
> > > Cairo.Matrix as a reference-type, so it will always be passed by
> > > reference. That would make it impossible to ever pass it by value,
> > > though. Do you see a problem with that or shall I change Cairo.Matrix as
> > > afore said?
> > >
> > >   
> > >       
> > No, I didn't find any API which requires passing by value so it should 
> > be ok, however, there should be the possibility to make a copy of the 
> > struct. Maybe a default copy constructor for ref types a la
> >
> > Cairo.Matrix a;
> > Cairo.Matrix b = new Cairo.Matrix(b);
> >
> > would be the way to go?
> >     
>
> Not sure yet, as there is no overloading and there could be a default
> construction method in the struct. Maybe something like a.copy () or
> a.dup () would be better.
>   
I'd vote for a.copy() since it seems to be the name most commonly used 
in GLib (g_boxed_copy, ...).

Dominique

> Jürg
>
>
>