(C++) Answer of exercise \#10: Obtaining a read-only (smart?) pointer

February 24, 2017 · View on GitHub

 

 

 

 

 

(C++) C++98 Answer of exercise #10: Obtaining a read-only (smart?) pointer

 

This is the answer of Exercise #10: Obtaining a read-only (smart?) pointer.

 

 

 

 

 

#include <boost/checked_delete.hpp> #include <boost/shared_ptr.hpp> struct MyStruct {   int m_x;   private:   ~MyStruct() {}   friend void boost::checked_delete<>(MyStruct *); }; struct MyStructKeeper {   MyStructKeeper() : m_s(new MyStruct) {}   const MyStruct * Get() const { return m_s.get(); }   private:   boost::shared_ptr<MyStruct> m_s; }; int main() {   MyStructKeeper k;   const MyStruct * s = k.Get(); //Should be required to write 'const MyStruct'   const int x = s->m_x; //Must compile   //s->m_x = 0; //Should not compile   //delete s;   //Should not compile }