Re: [Vala] Libgee problem

[Abderrahim Kitouni <a kitouni gmail com>]

Hi,

2009/12/10 Xavier Bestel <xavier bestel free fr>:
> On Wed, 2009-12-09 at 23:13 +0100, Jiří Zárevúcky wrote:
> > In order to make a value type nullable, you need to convert it to a
> > reference type. That's what you call boxing. So nullable and "boxed"
> > types are essentially the same (in C# anyway I think). Though I believe
> > Vala doesn't actually treat nullable types as reference types, because
> > there is no way to track reference count (someone correct me if I'm
> > mistaken). A nullable variable is implemented as a simple pointer here.
I'm not sure about the jargon, but I think "a pointer with memory
management even if without reference counting" is actually a reference
type. (like most of the compact classes)
> So that means you can't have boxed non-nullable types ?
Yes, or at least it's a very hidden feature that needs to be documented ;-p
> And that means a "double" has a different behavior than a "double?" ?
Because of automatic boxing/unboxing, you won't notice the difference
often, but yes, it could be.
> Non-obvious.
=> needs to be documented as part of the documentation hackaton

Peace,
Abderrahim