I can't add a smart pointer to the vector

Question

I can't add a smart pointer to the vector

There is a class MyClass, of course, with a constructor, you need to create a vector of smart pointers to objects of this class. The pointer itself is created, but an error occurs when trying to add it to the vector . What did I miss?

#include <memory>
#include  <vector>

using namespace std;
Int main()
{
    vector<unique_ptr<MyClass>> vectorPtr;
    unique_ptr<MyClass> p1(new MyClass);
    // до этого момента всё в порядке
    vectorPtr.push_back(p1);
    return 0;
}

4

c++stl smart-pointer vector

Author: Akynin99, 2017-08-01

Source

1 answers

score 7 · Accepted Answer

std::unique_ptr it doesn't have a copy constructor, so to put it in a vector, you need to move it there:

vectorPtr.push_back(std::move(p1));

Or so:

vectorPtr.push_back(std::make_unique<MyClass>())

Or create it directly in the vector:

vectorPtr.emplace_back(new MyClass);