From: David Turner (dkturner_at_[hidden])
Date: 2004-10-03 04:53:59
My apologies if this has been raised before. I've written a tiny class
called "p_ref" which is virtually identical to boost::ref except that it
(1) has a default constructor and (2) tests the pointer before
dereferencing it, raising a std::logic_error if it is null.
The reason for this is simply to be able to declare:
std::vector<p_ref<const std::string> > keys() const;
I admit that this is really just an efficiency consideration, and
therefore must yield to considerations of correctness and elegance, but
I find it useful.
I think it makes some sense to have both ref and pref, because the
intent behind them is slightly different.
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk