Question

class BTree

{

private:

int size;

Node* root;

public:

// constructors

BTree() : root(nullptr), size(0) {} // default constructor

BTree(const BTree& other); // copy constructor

BTree(BTree&& other); // move constructor

BTree& operator=(const BTree& other);

BTree& operator=(BTree&& other);

  

};

Implement the following function

BTree& BTree::operator=(BTree&& other)

{

if (this != &other) {

}

return *this;

}

Can you implement the move assigment and the move constructor

Answer 1

// Find the move constructor and move assignment operator function in bold below

class Node{

  

};

class BTree

{

  

private:

  

int size;

  

Node* root;

  

public:

  

// constructors

  

BTree() : root(nullptr), size(0) {} // default constructor

  

BTree(const BTree& other); // copy constructor

  

// move constructor

BTree(BTree&& other) : size(0), root(nullptr)

{

// move resources

size = other.size;

root = other.root;

  

// reset other's resources

other.size = 0;

other.root = nullptr;

}

  

BTree& operator=(const BTree& other);

  

BTree& operator=(BTree&& other);

  

  

  

};

// move assignment operator function

BTree& BTree::operator=(BTree&& other)

{

if (this!=&other)

{

// release the current object's resources

delete root;

size = 0;

     // move other's resources

size = other.size;

root = other.root;

// reset other's resources

other.size = 0;

other.root = nullptr;

}

  

return *this;

  

};