On 3 March 2010 23:17, Jan Hudec <[email protected]> wrote: > On Wed, Mar 03, 2010 at 15:22:59 -0600, Sandino Flores Moreno wrote: >> Is it possible for a weak ref to know when its peer object has been >> deleted (and then assigned to null)?
> By the way, note that Java and C# don't have any weak references at all. > Unowned references in vala are mostly optimization to avoid some reference > coutning or copying that you have to be careful with and can do without. Full > weak references are obviously useless for that, since setting up the back > link is more expensive than the reference counting in the first place. Just for the record, Java does have various reference types, including weak. For a summary: http://java.sun.com/javase/6/docs/api/java/lang/ref/package-summary.html For some classes: http://java.sun.com/javase/6/docs/api/java/lang/ref/Reference.html Reference.get() is the safe way to get a referenced object - assigning the result to something strongly references the object and so it is safe for as long as you need it. -- Phil Housley _______________________________________________ Vala-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/vala-list
