top">word_count_functor.cpp</a>).
        </p>
<h6>
<a name="spirit.lex.tutorials.lexer_quickstart1.h0"></a>
          <span class="phrase"><a name="spirit.lex.tutorials.lexer_quickstart1.prerequisites"></a></span><a class="link" href="lexer_quickstart1.html#spirit.lex.tutorials.lexer_quickstart1.prerequisites">Prerequisites</a>
        </h6>
<p>
          The only required <code class="computeroutput"><span class="preprocessor">#include</span></code>
          specific to <span class="emphasis"><em>Spirit.