template<typename T>
SinglyLinkedList<T>::SinglyLinkedList(const SinglyLinkedList& other)
{
    this->size = other.size;
    this->head = other.head;
    Node<T>* current = this->head;
    Node<T>* newcar;
    while (current->pNext != nullptr)
    {
        newcar = new Node<T>;
        newcar.data = other.data;
        newcar.pNext = other.pNext;
        newcar = newcar->pNext;
        current = current->pNext;
    }
}