def _default_checker(x, y):
    if x[0] != y[0]:
        raise Exception("Output mismatch.",
                        {'performlinker': x[0], 'clinker': y[0]})
Return the indices to access (n,n) arrays, given a masking function.
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/gof/cc.py/_default_checker--crossover with--dataset/ETHPy150Open nipy/nitime/nitime/utils.py/mask_indices