[boost] const_pointer_cast for shared_ptr

From: Colin Rafferty (colin.rafferty_at_[hidden])
Date: 2004-08-04 11:54:54

I would like to propose adding const_pointer_cast<> to shared_ptr, in
exactly the same way that there is dynamic_pointer_cast<> and
static_pointer_cast<>.

I am surprised that it is missing.  Is there a reason for that?

If not, I will submit a patch that implements this.

Thanks.

-- 
Colin