🚀 go-pugleaf

Hi All,

While playing with Metrowerks RTTI implementation ( THE C++ Compiler for the Mac 
), I encounter the lack of a dynamic_cast which works on a type_info&.
I won't get into how dynamic_cast works today when operating on types ( T's ). 
For instance : dynamic_cast<D*>(b) where b is a B*, and D is derived from B, or 
dynamic_cast<void*>(b) which returns the complete object.

Since all the information needed CAN be ( and probably IS ) taken from a 
type_info structure ( or the virtual table, in any case, they can both point to 
the same structure ), why not have a dynamic_cast<type_info&) ?

So one can pass a type_info, which was NOT obtained via typeid(), to a function 
which will, among others, use dynamic_cast ...

Etay.

-- Etay Bogner,
-- Etay_Bogner@mail.stil.scitex.com,
-- Scitex Corp.
-- Israel.


[ comp.std.c++ is moderated.  Submission address: std-c++@ncar.ucar.edu.
  Contact address: std-c++-request@ncar.ucar.edu.  The moderation policy
  is summarized in http://dogbert.lbl.gov/~matt/std-c++/policy.html. ]