Don't get me wrong: my question is NOT claiming $0^0 = 1$. I understand it's indeterminate.
Many articles show that defining $0^0 = 1$ is (just) convenient and I completely agree. However, I've heard something like "yeah, $0^0 = 1$ is convenient in integer and real but sometimes it's more reasonable to use $0^0 = 0$ especially in complex ..."
Can anybody show me any case where $0^0 = 0$ (or something else, other than 1) is more convenient?