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Write both the move assignment operator and move constructor member functions for this templated CS30Vect #include template class CS30Vector { public: // Constructs a vector size num CS3ØVector(int num) {/*Implementation not shown*/} CS30Vector() {/*Implementation not shown*/} // your code will go here // additional member functions not shown private: T *arr=nullptr; // used to point to dynamic array int size; }; number of elements in array void foo (CS30Vector v){/*Implementation not shown*/} int main ( ) { CS3ØVector 11{6}; CS30Vector 12; // uses move assignment operator 12 = std::move(11); // uses move constructor below foo(CS30Vector(3)); return 0; }

Write both the move assignment operator and move constructor member functions for this templated CS30Vect #include template class CS30Vector { public: // Constructs a vector size num CS3ØVector(int num) {/*Implementation not shown*/} CS30Vector() {/*Implementation not shown*/} // your code will go here // additional member functions not shown private: T *arr=nullptr; // used to point to dynamic array int size; }; number of elements in array void foo (CS30Vector v){/*Implementation not shown*/} int main ( ) { CS3ØVector 11{6}; CS30Vector 12; // uses move assignment operator 12 = std::move(11); // uses move constructor below foo(CS30Vector(3)); return 0; }

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
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please implement the move assignment operator and move constructor.

```cpp #include <iostream> template <typename T> class CS30Vector { public: // Constructs a vector size num CS30Vector(int num) {/*Implementation not shown*/} CS30Vector() {/*Implementation not shown*/} // your code will go here // additional member functions not shown private: T *arr=nullptr; // used to point to dynamic array int size; // number of elements in array }; void foo (CS30Vector<int> v){/*Implementation not shown*/} int main ( ) { CS30Vector<int> l1{6}; CS30Vector<int> l2; // uses move assignment operator l2 = std::move(l1); // uses move constructor below foo(CS30Vector<int>(3)); return 0; } ``` ### Explanation: In this C++ code snippet, you have a templated class `CS30Vector<T>` designed to represent a vector with dynamic memory management. Below is a breakdown of the key components: - **Template Definition**: The class is templated to allow flexibility with different data types (`<typename T>`). - **Constructors**: - `CS30Vector(int num)`: Constructor that initializes a vector of size `num`. The implementation is not shown. - `CS30Vector()`: Default constructor with the implementation not shown. - **Private Members**: - `T *arr=nullptr;`: A pointer to the dynamic array, initialized to `nullptr`. - `int size;`: Stores the number of elements in the array. - **Function `foo`**: This function accepts a vector of integers and has an implementation that is not shown in the snippet. - **Main Function**: - Creates an instance `l1` of type `CS30Vector<int>` with size `6`. - Declares another instance `l2`. - Uses the move assignment operator to transfer resources from `l1` to `l2` using `std::move`. - Demonstrates the move constructor by passing a temporary `CS30Vector<int>` object to the `foo` function. This exercise aims to implement move assignment operator and move constructor functionalities, which efficiently transfer ownership of resources, crucial for optimizing performance in resource management.
Transcribed Image Text:```cpp #include <iostream> template <typename T> class CS30Vector { public: // Constructs a vector size num CS30Vector(int num) {/*Implementation not shown*/} CS30Vector() {/*Implementation not shown*/} // your code will go here // additional member functions not shown private: T *arr=nullptr; // used to point to dynamic array int size; // number of elements in array }; void foo (CS30Vector<int> v){/*Implementation not shown*/} int main ( ) { CS30Vector<int> l1{6}; CS30Vector<int> l2; // uses move assignment operator l2 = std::move(l1); // uses move constructor below foo(CS30Vector<int>(3)); return 0; } ``` ### Explanation: In this C++ code snippet, you have a templated class `CS30Vector<T>` designed to represent a vector with dynamic memory management. Below is a breakdown of the key components: - **Template Definition**: The class is templated to allow flexibility with different data types (`<typename T>`). - **Constructors**: - `CS30Vector(int num)`: Constructor that initializes a vector of size `num`. The implementation is not shown. - `CS30Vector()`: Default constructor with the implementation not shown. - **Private Members**: - `T *arr=nullptr;`: A pointer to the dynamic array, initialized to `nullptr`. - `int size;`: Stores the number of elements in the array. - **Function `foo`**: This function accepts a vector of integers and has an implementation that is not shown in the snippet. - **Main Function**: - Creates an instance `l1` of type `CS30Vector<int>` with size `6`. - Declares another instance `l2`. - Uses the move assignment operator to transfer resources from `l1` to `l2` using `std::move`. - Demonstrates the move constructor by passing a temporary `CS30Vector<int>` object to the `foo` function. This exercise aims to implement move assignment operator and move constructor functionalities, which efficiently transfer ownership of resources, crucial for optimizing performance in resource management.
Expert Solution
Step 1

 Move assignment operator:
CS30Vector& operator=(CS30Vector&& other) noexcept
{
   std::cout << "In operator=(CS30Vector&&). length = "
             << other._length << "." << std::endl;

   if (this != &other)
   {
      // Free the existing resource.
      delete[] _data;

      // From source object, copy the data pointer and its length 
      _data = other._data;
      _length = other._length;

      // Release the data pointer from the source object so that
      // the destructor does not free the memory multiple times.
      other._data = nullptr;
      other._length = 0;
   }
   return *this;
}

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