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enum operator
#include <iostream> enum class Day { mon, tue, wed, thu, fri, sat, sun }; Day operator++(Day& d) { return d == Day::sun ? Day::mon : Day{++d}; } int main() { Day today = Day::sat; Day tomorrow = ++today; std::cout << static_cast<int>(today) << std::endl; std::cout << static_cast<int>(tomorrow) << std::endl; }
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