How to setflags() for pybind11 array ?

[jiapei100]

From https://github.com/pybind/pybind11/blob/master/include/pybind11/numpy.h, we can see there is a function

 /// Return the NumPy array flags
    int flags() const {
        return detail::array_proxy(m_ptr)->flags;
    }

which is returning array's flags. Just wonder if there is a way to setflags() for pybind11 array?

Cheers

[Skylion007]

The Flags are template param of array_t object in detail/numpy.h and are defined a construction of the array_t. If you want to change the flags you will need to construct a new array_t wrapper object with the flags you desire:

pybind11/include/pybind11/numpy.h

Line 846 in 0be2ea0

template <typename T, int ExtraFlags = array::forcecast> class array_t : public array {

[Skylion007]

@jiapei100 Our Eigen bindings do this with the writable-flag and the array_proxy class btw.