[C++] Using msgpack-c with FIO

Output serialized objects to ofstream：

#include <msgpack.hpp>

 ofstream out("output.txt");
 msgpack::packer<std::ofstream> pk(&out);

 //packing an integer
 int n=10;
 pk.pack(n);

 //packing a integer list
 vector<int> num_list;
 num_list.push_back(1); num_list.push_back(2); num_list.push_back(3);
 pk.pack(num_list);

 //packing a integer list one by one 
 pk.pack_array(num_list.size());
 for(int j = 0;j<num_list.size();j++){
   pk.pack(num_list[i]);
 }

Input serialized object from ifstream：

ifstream in("input.txt",ios::binary);
stringstream buffer;
buffer << in.rdbuf();

msgpack::unpacker pac;
// feeds the buffer.
pac.reserve_buffer(buffer.str().size());
memcpy(pac.buffer(), buffer.str().data(), buffer.str().size());
pac.buffer_consumed(buffer.str().size());

// now starts streaming deserialization.
msgpack::object_handle oh;
while(pac.next(oh)) {
 std::cout << oh.get() << std::endl;
}