How to convert vector of char to stringstream

If we look at the std::stringstream constructors, we see that the second one is:

explicit basic_stringstream( const std::basic_string<CharT,Traits,Allocator>& str,
                ios_base::openmode mode = ios_base::in|ios_base::out );

And the constructors of basic_string include:

template< class InputIt >
basic_string( InputIt first, InputIt last, 
              const Allocator& alloc = Allocator() );

Thus, we can do:

std::vector<unsigned char> data(20);

std::stringstream st(std::string(data.begin(), data.end()));