pybind/pybind11
GitHub で見るNot clear how to expose existing C++ vector as numpy array
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#1,042 opened on 2017年8月30日
enhancementhelp wanted
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説明
This is a question of documentation rather than an issue. I can't find any example of the following very common scenario:
std::vector<int> some_func();
...
// We want to expose returned std::vector as a numpy array without copying
m.def("some_func", []() -> py::array {
auto data = some_func();
// What to do with data?? Map it with Eigen (then return what?), wrap somehow with py::buffer (how?)
})
I don't know the answer. It would be very nice to have this explained in docs since this scenario if rather common.