[sdo] [SDO-87]: Add RefCountingPointer::operator void*() method

[Radu Preotiuc-Pietro <radup@bea.com>]

Geoff Winn [10/Jan/07 10:36 AM] 
In the 2.1 spec I deleted the section in chapter 5 that required the use
of double negation. It is at least now permitted to provide a sensible
implementation for 

if (p)

where p is a smart pointer.

I agree with the more general point though. We should be clearer about
what we expect from a reference counted pointer.


Michael B. Yoder [23/Aug/07 01:52 AM] 
Even better than a void* conversion operator is to use the safe bool
idiom. This allows conversions in bool expressions such as if statments,
without any unwanted side effects.
http://www.artima.com/cppsource/safebool.html




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