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His semester we looked at three languages (C++, Java and Python). One common rule in all three class checklists (for C++, Java and Python) was a logical equivalence (equals) function. In C++ it was operator==; in Java it was equals; and in Python it was __eq__. Why does this rule exist in all three languages?

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His semester we looked at three languages (C++, Java and Python). One common rule in all three class...

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