table of contents
std::unique_ptr::get(3) | C++ Standard Libary | std::unique_ptr::get(3) |
NAME¶
std::unique_ptr::get - std::unique_ptr::get
Synopsis¶
pointer get() const noexcept; (since C++11)
(constexpr since C++23)
Returns a pointer to the managed object or nullptr if no object is owned.
Parameters¶
(none)
Return value¶
Pointer to the managed object or nullptr if no object is owned.
Example¶
// Run this code
#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';
}
Output:¶
Res::Res("Hello, world!");
Res { s = "Hello, world!"; }
Res::~Res();
See also¶
release returns a pointer to the managed object and releases the
ownership
(public member function)
2024.06.10 | http://cppreference.com |