Creating my own Iterators

Question

I\'m trying to learn C++ so forgive me if this question demonstrates a lack of basic knowledge, you see, the fact is, I have a lack of basic knowledge.

I want some h

Answer 1

/EDIT: I see, an own iterator is actually necessary here (I misread the question first). Still, I'm letting the code below stand because it can be useful in similar circumstances.

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Is an own iterator actually necessary here? Perhaps it's sufficient to forward all required definitions to the container holding the actual Points:

// Your class `Piece`
class Piece {
private:
    Shape m_shape;

public:

    typedef std::vector::iterator iterator;
    typedef std::vector::const_iterator const_iterator;

    iterator begin() { return m_shape.container.begin(); }

    const_iterator begin() const { return m_shape.container.begin(); }

    iterator end() { return m_shape.container.end(); }

    const_iterator end() const { return m_shape.const_container.end(); }
}

This is assuming you're using a vector internally but the type can easily be adapted.