[C++-sig] On wrapping vector<pair<string, double> >
Zhang Le
ejoy at 163.com
Thu Oct 2 05:48:59 CEST 2003
> From: Nicodemus <nicodemus at globalite.com.br>
> Subject: Re: [C++-sig] On wrapping vector<pair<string, double> >
> To: Development of Python/C++ integration <c++-sig at python.org>
> Message-ID: <3F7963B7.3030904 at globalite.com.br>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> It is hard to tell by your description of the problem alone, some code
> would help. But try this:
>
> py::list py_eval(py::list v)
> {
> vector< pair<string, double> > input;
> int i;
> int len = py::extract<int>(v.attr("__len__")());
> ...
Thank you. I have tracked the bug:
I forget to use attr("__len__") to get the length of a list. Actually,
I'm trying to do:
size_t len = py::extract<size_t>(v);
I have an additional question: How to detect a type of a py::object in
boost.python?
I want to change my function to accept either 'str' or 'list' type.
py_eval(py::object obj) {
if (type(obj) is 'str') {
...
} else if (type(obj) is 'list' or 'tuple') {
...
}
}
How to do the above statements in c++ code?
Thanks.
--
Sincerely yours,
Zhang Le
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