http://nectarpost.com/make_tuple-in-cpp-will-make-life-easier/
const used with functions : class Dog { int age; string name; public: Dog() { age = 3; name = "dummy"; } // const parameters and these are overloaded functions void setAge(const int& a) { age = a; } void setAge(int& a) { age = a; } // Const return value const string& getName() {return name;} // const function and these are overloaded functions void printDogName() const { cout << name << "const" << endl; } // value of name can't be modified void printDogName() { cout << getName() << " non-const" << endl; } }; int main() { Dog d; d.printDogName(); const Dog d2; d2.printDogName(); }
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