DynamicBuffer_v1: Get a list of buffers that represents the output sequence, with the given size.
mutable_buffers_type prepare( std::size_t n);
Ensures that the output sequence can accommodate n
bytes,
resizing the vector object as necessary.
An object of type mutable_buffers_type
that satisfies MutableBufferSequence
requirements, representing vector memory at the start of the output sequence
of size n
.
If size() + n > max_size()
.
The returned object is invalidated by any dynamic_vector_buffer
or vector
member function that modifies the input sequence
or output sequence.