Xavier Bestel píše v St 09. 12. 2009 v 22:42 +0100:
[...]
Excuse me, but I'm a bit lost: I thought the question mark was for
nullable types. What's the link with "boxed" types ?
Thanks,
Xav
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.
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