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      In this section we shall walk through the essential steps to get started with
      the library. After reading it you should be able to initialize the library
      and add logging to your application. The code of this tutorial is also available
      in examples residing in the libs/log/examples directory. Feel free to play with
      them, compile and see the result.
    
For those who don't want to read tons of clever manuals and just need a simple tool for logging, here you go:
#include <boost/log/trivial.hpp> int main(int, char*[]) { BOOST_LOG_TRIVIAL(trace) << "A trace severity message"; BOOST_LOG_TRIVIAL(debug) << "A debug severity message"; BOOST_LOG_TRIVIAL(info) << "An informational severity message"; BOOST_LOG_TRIVIAL(warning) << "A warning severity message"; BOOST_LOG_TRIVIAL(error) << "An error severity message"; BOOST_LOG_TRIVIAL(fatal) << "A fatal severity message"; return 0; }
        The BOOST_LOG_TRIVIAL macro
        accepts a severity level and results in a stream-like object that supports
        insertion operator. As a result of this code, the log messages will be printed
        on the console. As you can see, this library usage pattern is quite similar
        to what you would do with std::cout.
        However, the library offers a few advantages:
      
It must be said that the macro, along with other similar macros provided by the library, is not the only interface the library offers. It is possible to issue log records without using any macros at all.