Re: [Boost-Users] Re: boost::python - double vs. int - unexpected behavior

From: cavok_at_[hidden]
Date: 2003-08-21 18:28:04

On Thu, Aug 21, 2003 at 11:07:04AM -0400, David Abrahams wrote:
> cavok_at_[hidden] writes:
> 
> > hi,
> >
> > i attached a simple example that shows the following behavior:
> >
> > $ python
> > Python 2.2.3+ (#1, Aug 10 2003, 10:11:23) 
> > [GCC 3.3.1 (Debian)] on linux2
> > Type "help", "copyright", "credits" or "license" for more information.
> >>>> import test
> >>>> a=test.A()
> >>>> a.f(3)
> > double
> >>>> a.f(3.8)
> > double
> >>>> a.f(int(3))
> > double
> >>>>
> > $
> >
> > well, doesn't it look weird?
> >
> > any idea on how i can get the correct c++ method called?
> 
> Reverse the order of the .def calls -- Boost.Python prefers later defs
> and Python ints match C++ double args, but not vice-versa.  Yes, this
> really should be documented.  One day we will have "best match"
> overloading and this issue will disappear.
> 
it is very nice to know this, indeed i expected the "best match"
approach, even if nobody told me about it.

i made several tests and i can't believe i have always used the wrong order!

many thanks

cheers
dom

-----[ Domenico Andreoli, aka cavok
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