C++ Logger

Thread safe Logger. Based on drdoobs tutorial at http://www.drdobbs.com/cpp/a-lightweight-logger-for-c/240147505

UML Diagram
std::stringstream Read about std::stringstream
..*C_Stream class uses std::stringstream to collect different types of imput and append it
to the stringstream object.
template<typename... Args> Read about Template Parameter Pack Here
..*C_Stream class uses Template parameter pack to collect all the input and append it
to the stringstream object. Two member functions print() are defined:

        template<typename Head, typename... Tail>
        void print(Head head, Tail... tail) {
            m_streamString << head;
            print(tail...);
        }

and

      template<typename Stream>
      void Logger::C_Logger<Stream>::print() {
          stream->write( m_streamString.str() );
          m_streamString.str("");
      }

Member function void print(Head head, Tail... tail) is Tail recursive method. With every
recursive call, the first parameter (head) appends m_streamString(std::streamstring),
and the second (tail) is used as a parameter to the next recursive call until the are no
parameters. At the end when there are no parameters, the base case function print() is
called to write the m_streamString(std::streamstring) to the stream

guve4e/Logger

C++ Logger