def usecase2(x, N):
    for k in range(N):
        y = x[k]
        print(y.f1, y.s1, y.f2)
Base on test1 of https://github.com/numba/numba/issues/381
dataset/ETHPy150Open numba/numba/numba/tests/test_recarray_usecases.py/usecase2