Pass a unique_ptr around your program. - C++ Data Type

C++ examples for Data Type:unique_ptr

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Description

Pass a unique_ptr around your program.

Demo Code

#include <iostream>
#include <memory>
#include <string>
using namespace std;

class MyClass/*from  ww w  .j  a v a 2 s  .  c  o m*/
{
private:
    string m_Name;
    int m_Value;

public:
    MyClass(const string& name, int value)
        : m_Name{ name }
        , m_Value{ value }
    {
        cout << "Constructing!" << endl;
    }

    ~MyClass()
    {
        cout << "Destructing!" << endl;
    }

    const string& GetName() const
    {
        return m_Name;
    }

    int GetValue() const
    {
        return m_Value;
    }
};

using MyUniquePtr = unique_ptr<MyClass>;

auto PassUniquePtr(MyUniquePtr ptr)
{
    cout << "In Function Name: " << ptr->GetName() << endl;
    return ptr;
}

int main()
{
    auto uniquePointer = make_unique<MyClass>("MyClass", 10);

    auto newUniquePointer = PassUniquePtr(move(uniquePointer));

    if (uniquePointer)
    {
        cout << "First Object Name: " << uniquePointer->GetName() << endl;
    }

    cout << "Second Object Name: " << newUniquePointer->GetName() << endl;

    return 0;
}

Result


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