#includePointerWrap p = new int(42); // create a new pointer to an integer with value 42 p.do([](int* ptr) { *ptr += 1; }); // increment the integer value by 1 std::cout << *p << std::endl; // output: 43
#includeIn this example, we create a new pointer to a MyClass object and output its value using the arrow operator `->`. We then attempt to increment the value using the `do` method, but encounter a compile-time error due to the constness of the `getValue` method in the MyClass class. As stated in the code examples, the package library used for PointerWrap is "PointerWrap.h".#include class MyClass { public: MyClass(int value) : _value(value) {} int getValue() const { return _value; } private: int _value; }; int main() { PointerWrap p = new MyClass(42); // create a new pointer to a MyClass object with value 42 std::cout << p->getValue() << std::endl; // output: 42 p.do([](MyClass* ptr) { ptr->getValue() += 1; }); // error: MyClass::getValue() is const return 0; }