def usecase4(x, N):
    for k in range(N):
        y = x[k]
        print(y.f1, x.s1[k], y.f2)
Base on test3 of https://github.com/numba/numba/issues/381
dataset/ETHPy150Open numba/numba/numba/tests/test_recarray_usecases.py/usecase4