def usecase3(x, N):
    for k in range(N):
        print(x.f1[k], x.s1[k], x.f2[k])
Base on test2 of https://github.com/numba/numba/issues/381
dataset/ETHPy150Open numba/numba/numba/tests/test_recarray_usecases.py/usecase3