Class ContainerInternal

openpgl/data/SampleContainerInternal.h:15–224

template <typename Type>
struct ContainerInternal
{
    struct Iterator
    {
        using iterator_category = std::forward_iterator_tag;
        using difference_type = std::ptrdiff_t;
        using value_type = Type;
        using pointer = Type *;
        using reference = Type &;

        Iterator() : m_ptr(nullptr) {}
        Iterator(pointer ptr) : m_ptr(ptr) {}

        reference operator*() const
        {
            return *m_ptr;
        }
        pointer operator->()
        {
            return m_ptr;
        }

        // Prefix and postfix increment
        Iterator &operator++()
        {
            m_ptr++;
            return *this;
        }
        Iterator operator++(int)
        {
            Iterator tmp = *this;
            ++(*this);
            return tmp;
        }

        // Prefix and postfix decrement
        Iterator &operator--()
        {
            --m_ptr;
            return *this;
        }
        Iterator operator--(int)
        {
            Iterator tmp(*this);
            operator--();
            return tmp;
        }

        friend Iterator operator+(const Iterator lhs, const int idx)
        {
            return Iterator(lhs.m_ptr + idx);
        }
        friend Iterator operator+=(const Iterator lhs, const int idx)
        {
            return Iterator(lhs.m_ptr + idx);
        }
        friend Iterator operator-(const Iterator lhs, const int idx)
        {