human
I wrote the below code

    class _UnaryPositiveKernel(_Kernel, ):
        def generate(self, *args):
            [val] = args
            return val
    return numpy_ufunc_kernel(context, builder, sig, args, _UnaryPositiveKernel, explicit_output=False)

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

@lower('+', types.Array)
def array_positive_impl(context, builder, sig, args):