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Deep Copy in C++: How to Avoid Shallow Copy Pitfalls

Tutorial April 11, 2025

A shallow copy copies the values of member variables as-is. If your class has a pointer member, both the original and copy point to the same memory.

class Shallow {
public:
    int* data;

    Shallow(int val) {
        data = new int(val);
    }

    ~Shallow() {
        delete data;
    }
};

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