Re: Promoting weak pointers

On Jun 16, 3:55 pm, Michiel Helvensteijn <m.helvenste...@gmail.com>
wrote:
> However, I would argue that weak pointer promotion is in this instance
> only a workaround for ensuring the isolation of your pair of
> operations (testing for null and dereferencing). You did not really
> want to keep the object alive. You merely wanted to interact with the
> object iff it exists, which should be possible with a weak pointer.


I think you should study some prior art. Try and write up a concrete
analysis of the way that the following three weak reference
implementations work:


(1) java.lang.ref.WeakReference (Java)
        <http://java.sun.com/javase/6/docs/api/java/lang/ref/
WeakReference.html>


(2) System.WeakReference (C#)
        <http://msdn.microsoft.com/en-us/library/
system.weakreference.aspx>


(3) boost::weak_ptr (C++)
        <http://www.boost.org/doc/libs/1_39_0/libs/smart_ptr/weak_ptr.htm>


Enjoy,
Andrew.


--
Andrew Tomazos <andrew@tomazos.com> <http://www.tomazos.com>

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