Method empty

rpc/serialize.h:74–74

        const T& front() const    { return (*this)[0]; }
        const T& back() const     { return (*this)[(long)size() - 1]; }
        bool empty() const { return _len == 0; }
        void assign(const T* x, size_t size) { buffer::assign(x, sizeof(*x) * size); }
        void assign(const std::vector<T>& vec) { assign(&vec[0], vec.size()); }