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Operator Overload
//g++ 5.4.0 #include <iostream> struct Test{ int out; Test():out(0){} Test& operator()(int n){ out+=n; return *this; } Test& operator[](int n){ out-=n; return *this; } }; int main() { std::cout << "Hello, world!\n"; std::cout << Test()(1)[3](5)[7].out; }
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