Function rune_native::rune_string_tensor_get_by_index

#[no_mangle]
pub unsafe extern "C" fn rune_string_tensor_get_by_index(
    tensor: *const StringTensor<'_>, 
    index: usize, 
    string_out: *mut *const u8
) -> c_int

Get a pointer to the string at a specific index in the StringTensor’s backing array, returning its length in bytes and setting string_out if that string exists.

If the index is out of bounds, this function returns 0 and sets string_out to null.