Method begin

tests/test_sequences_and_iterators.cpp:379–379

    public:
        explicit IntPairs(std::vector<std::pair<int, int>> data) : data_(std::move(data)) {}
        const std::pair<int, int> *begin() const { return data_.data(); }
        // .end() only required for py::make_iterator(self) overload
        const std::pair<int, int> *end() const { return data_.data() + data_.size(); }