ProductSpaceElement.writable_array

ProductSpaceElement.writable_array(must_be_contiguous: bool = False)

Expose the data underlying this element as a single array that can be modified in-place and the changes kept. Unlike in the TensorSpace case, which always uses a single array for storage, this is in general not possible for a product space, only for the special case of a power-space. Compare with asarray.