example3_defaulted_move_operations.cpp

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#include <iostream>
#include <vector>

class DataHolder {
public:
    DataHolder(std::vector<int> data) : data_(std::move(data)) {}
    
    // Defaulted move constructor
    DataHolder(DataHolder&&) = default;
    
    // Defaulted move assignment operator
    DataHolder& operator=(DataHolder&&) = default;
    
    // Deleted copy operations to enforce move semantics
    DataHolder(const DataHolder&) = delete;
    DataHolder& operator=(const DataHolder&) = delete;
    
    void printData() const {
        for (int i : data_) {
            std::cout << i << " ";
        }
        std::cout << std::endl;
    }

private:
    std::vector<int> data_;
};

int main() {
    DataHolder d1({1, 2, 3, 4, 5});
    DataHolder d2 = std::move(d1);  // Uses defaulted move constructor
    
    DataHolder d3({6, 7, 8});
    d3 = std::move(d2);  // Uses defaulted move assignment operator
    
    d3.printData();
    
    return 0;
}