..so,It seems I can only convert std::string and make a deep copy.I can only avoid it as much as possible.Thank you.
2012/12/22 Jim Bosch <tallji...@gmail.com> > On 12/21/2012 03:52 AM, simon zhang wrote: > >> How to converter std::string* in boost.python?I have to handle some data >> of c++ in python.The data may be big.So I return a pointer to python. >> But there are some errors. >> >> > If the data is big, and you really want to avoid a deep copy, the only way > to use it is if you manually allocate the memory as a Python str object > using the Python C API or return it as something else (like a NumPy array > or buffer object, or a custom Boost.Python-wrapped class) that can hold > C++-allocated memory. A Python str object always owns its own memory, and > so does std::string, so you can't convert from one to the other without a > deep copy. > > Jim > > ______________________________**_________________ > Cplusplus-sig mailing list > Cplusplus-sig@python.org > http://mail.python.org/**mailman/listinfo/cplusplus-sig<http://mail.python.org/mailman/listinfo/cplusplus-sig> >
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