Method begin

src/backward.h:827–833

        return Trace(_stacktrace[idx + skip_n_firsts()], idx);
    }
    void* const* begin() const
    {
        if (size()) {
            return &_stacktrace[skip_n_firsts()];
        }
        return nullptr;
    }

protected:
    std::vector<void*> _stacktrace;