std::unique_ptr<T,Deleter>::get

Since C++11

pointer get() const noexcept;

Since C++23

constexpr pointer get() const noexcept;

Returns a pointer to the managed object or nullptr if no object is owned.

Example

#include <iomanip>
#include <iostream>
#include <memory>
#include <string>
#include <utility>
 
class Res {
    std::string s;
 
public:
    Res(std::string arg) : s{ std::move(arg) } {
        std::cout << "Res::Res(" << std::quoted(s) << ");\n";
    }
 
    ~Res() {
        std::cout << "Res::~Res();\n";
    }
 
private:
    friend std::ostream& operator<< (std::ostream& os, Res const& r) {
        return os << "Res { s = " << std::quoted(r.s) << "; }";
    }
};
 
int main()
{
    std::unique_ptr<Res> up(new Res{"Hello, world!"});
    Res *res = up.get();
    std::cout << *res << '\n';
}

Result

Res::Res("Hello, world!");
Res { s = "Hello, world!"; }
Res::~Res();