[C++-sig] ArgumentError when use the shared_ptr<T>

David Abrahams dave at boostpro.com
Tue Jan 27 15:32:23 CET 2009

on Tue Jan 27 2009, ZaeX <zaexage-AT-gmail.com> wrote:

> Thanks, Roman. It solved the problem.
> Can't believe this '&' takes me two days.

Using T const& as a parameter would've worked too.  The thing to remember
with Boost.Python is that a T& parameter has a very special meaning:
there has to be a T hanging around in memory somewhere that your code
can modify.  shared_ptr<X> is conjured up on-the-fly unless you happen
to have one embedded in your Python object.

Dave Abrahams
BoostPro Computing

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