Method is_inline

include/pybind11/detail/argument_vector.h:217–217

    PYBIND11_NOINLINE void reserve_slow_path(std::size_t sz) { m_repr.hvector.vec.reserve(sz); }

    bool is_inline() const { return m_repr.is_inline(); }
};

// Container to avoid heap allocation for kRequestedInlineSize or fewer booleans.