std::shared_ptr<T>:: operator<<

From cppreference.com
C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Dynamic memory management
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Allocators
Garbage collection support
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)



std::shared_ptr
Member functions
Modifiers
Observers
(C++17)
( until C++20* )
(C++26)
(C++26)
Non-member functions
(C++20)
(C++20)
(C++17)
(until C++20) (until C++20) (until C++20) (until C++20) (until C++20) (C++20)
operator<<
functions ( until C++26* )
Helper classes
(C++20)
Deduction guides (C++17)
template < class T, class U, class V >
std:: basic_ostream < U, V > & operator << ( std:: basic_ostream < U, V > & os, const std:: shared_ptr < T > & ptr ) ;

Inserts the value of the pointer stored in ptr into the output stream os .

Equivalent to os << ptr. get ( ) .

Parameters

os - a std::basic_ostream to insert ptr into
ptr - the data to be inserted into os

Return value

os

Example

Run this code 
#include <iostream>
#include <memory>
 
class Foo {};
 
int main()
{
    auto sp = std::make_shared<Foo>();
    std::cout << sp << '\n';
    std::cout << sp.get() << '\n';
}

Possible output: 

0x6d9028
0x6d9028

See also

returns the stored pointer
(public member function)
Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/memory/shared_ptr/operator_ltlt&oldid=153794 "