Create a new modifiable buffer that represents the given POD array.
template< typename PodType, std::size_t N> mutable_buffer buffer( PodType (&data)[N], std::size_t max_size_in_bytes);
A mutable_buffer
value equivalent to:
mutable_buffer( static_cast<void*>(data), min(N * sizeof(PodType), max_size_in_bytes));