Install Boost on Ubuntu:

sudo apt install libboost-all-dev

Or search for the particular boost package needed:

apt-cache search libboost

shared_ptr

• Copyable and movable
• Uses reference counting; use in combination with weak_ptr to avoid circular references

#include <boost/shared_ptr.hpp>
#include <string>

// std::string* str = new std::string(); becomes:
boost::shared_ptr<std::string> str(new std::string);

// it's a pointer, so don't forget to dereference it
*str = "hey!";
std::cout << *str << std::endl;

scoped_ptr

• Replace shared_ptr in the example above with scoped_ptr to use it
• Neither copyable nor movable
• Deleted when the pointer goes out of scope
• Useful to avoid memory leaks when you leave the function early