Category : operator-overloading

I’m creating a complex struct which overloads operators +,*,-,…etc. I’ve written the following code: struct complex{ double re; double im; complex& operator+(const complex& c){ return complex{this->re + c.re, this->im + c.im}; } complex& operator+(const double d){ return complex{this->re + d, this->im}; } // operator overload for double + complex? complex& operator*(const complex& c){ complex cx; ..

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It says that: In file included from stack.cpp:6: ./stack.hpp:41:25: error: no candidate function template was found for dependent friend function template specialization friend ostream& operator << <>(ostream& out, const Stack& s1); //hpp template <class T> class Stack { public: template <class U> Stack<T>& operator=(const Stack<U>& a_stack); friend ostream& operator<<<>(ostream& out, const Stack<T>& s1); private: T ..

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I’m converting from Eigen matrix to my own code. While I convert it, I wondered about performance of Eigen Matrix operator+ I’ve tested with below code(Using Eigen Matrix) Eigen::MatrixXd Mat(6, 6); Mat << 698.28622975817, 7655.16788149002, 7093.64830858073, 1189.97681558377, 712.67059305653, 472.15529963803, 3170.99480060861, 791.99901137063, 756.86681982361, 4983.64051982143, 2550.95115459269, 1386.24442828679, 9502.22048838355, 1868.72604554379, 270.25076998578, 9597.43958516081, 5059.57051665142, 1492.94005559057, 344.460805029088, 4897.64395788231, 697.02676853675, 3403.85726666133, ..

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I want to overload "[]" witch is used to access array But I also want to separate read/write to do different thing For example : class myclass{ private: int val; public: myclass(){val=0;} myclass(int _in){val=_in;} …. //for A=myclass[n] myclass& operator[](int index){ … return } //for myclass[n]=B myclass& operator[](int index){ … return } } Source: Windows Questions ..

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