Re: [boost] Boost.Python

[Dan Nuffer]

David Abrahams wrote:

Dan Nuffer <[EMAIL PROTECTED]> writes:

2. Is is possible to wrap member functions which take a variable
number of arguments (e.g. int format(const char* fmt, ...); ) ?  I
tried .def("format", &OW_String::format) but that doesn't work.

Not directly. Conversions from Python to C++ are "target-driven",
meaning that we need to know the type of the C++ argument in order to
make the conversion happen.
There are ways you can write a function which takes an arbitrary
number of Python objects in an argument tuple, and you can do the
dispatching yourself.

You could also consider supporting a fixed maximum number of arguments
by wrapping something like:

int format_dispatch(
char const*fmt, object a0 = object(), object a1 =
object()... object aN = object())
{
// implementation details left up to you ;-)
}

You probably know something I don't. I can't think of a way to do this without having a n^m explosion of code, where n = number of types to support and m = number of arguments. Is there an good way to implement this?

Thanks,
Dan Nuffer


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