[C++-sig] Re: wrapping boost::optional

[David Abrahams]

"Neal D. Becker" <ndbecker2 at verizon.net> writes:

> What would be better, though, is that if the option is not initialized, it
> should return None in response to get.  That would be more pythonic, no? 
> Problem is, I don't know how to do that.  Any hints?

template<typename T>
inline object get (boost::optional<T>& o) {
  return o ? object() : object(o.get());
}

You'll have some issues with policies and ownership if you ever want
to wrap optional<T*> or optional<T&>, but this should be enough to get
you started.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com