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

Inserts the value of the pointer managed by p into the output stream os .

Equivalent to os << p. get ( ) .

This overload participates in overload resolution only if os << p. get ( ) is a valid expression.

Parameters

Return value

os

Notes

If std:: unique_ptr < Y, D > :: pointer is a pointer to a character type (e.g., when Y is char ( [ ] ) or CharT ( [ ] )), this may end up calling the overloads of operator<< for null-terminated character strings (causing undefined behavior if the pointer does not in fact point to such a string), rather than the overload for printing the value of the pointer itself .

Example

#include <iostream>
#include <memory>
 
class Foo {};
 
int main()
{
    auto p = std::make_unique<Foo>();
    std::cout << p << '\n';
    std::cout << p.get() << '\n';
}

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See also