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<div class="chapter">
<div class="titlepage"><div>
<div><h2 class="title">
<a name="phoenix"></a>Chapter&#160;1.&#160;Phoenix 3.2.0</h2></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Joel</span> <span class="surname">de Guzman</span>
</h3></div></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Dan</span> <span class="surname">Marsden</span>
</h3></div></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Thomas</span> <span class="surname">Heller</span>
</h3></div></div>
<div><div class="author"><h3 class="author">
<span class="firstname">John</span> <span class="surname">Fletcher</span>
</h3></div></div>
<div><p class="copyright">Copyright &#169; 2002-2005, 2010, 2014, 2015 Joel de Guzman, Dan Marsden, Thomas
      Heller, John Fletcher</p></div>
<div><div class="legalnotice">
<a name="phoenix.legal"></a><p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></div>
</div></div>
<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dt><span class="section"><a href="phoenix/release_notes.html">Release Notes</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new.html">What's New</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix___warning_on__lambda_and_let_.html">Phoenix
      - warning on <span class="bold"><strong>lambda and let</strong></span></a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_2_0__boost_1_58_0_.html">Phoenix
      3.2.0 (Boost 1.58.0)</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_1_1.html">Phoenix 3.1.1</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_1_0.html">Phoenix 3.1.0</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_0_6__boost_1_57_0_.html">Phoenix
      3.0.6 (Boost 1.57.0)</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_0_5.html">Phoenix 3.0.5</a></span></dt>
<dt><span class="section"><a href="phoenix/what_s_new/phoenix_3_0.html">Phoenix 3.0</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/introduction.html">Introduction</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit.html">Starter Kit</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/starter_kit/values.html">Values</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/references.html">References</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/arguments.html">Arguments</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/lazy_operators.html">Lazy Operators</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/lazy_statements.html">Lazy Statements</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/construct__new__delete__casts.html">Construct,
      New, Delete, Casts</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/lazy_functions.html">Lazy Functions</a></span></dt>
<dt><span class="section"><a href="phoenix/starter_kit/more.html">More</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/basics.html">Basics</a></span></dt>
<dt><span class="section"><a href="phoenix/organization.html">Organization</a></span></dt>
<dt><span class="section"><a href="phoenix/actor.html">Actor</a></span></dt>
<dt><span class="section"><a href="phoenix/modules.html">Modules</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/core.html">Core</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/core/values.html">Values</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/core/references.html">References</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/core/arguments.html">Arguments</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/core/nothing.html">Nothing</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/modules/function.html">Function</a></span></dt>
<dd><dl><dt><span class="section"><a href="phoenix/modules/function/adapting_functions.html">Adapting
        Functions</a></span></dt></dl></dd>
<dt><span class="section"><a href="phoenix/modules/operator.html">Operator</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement.html">Statement</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/statement/block_statement.html">Block Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/if__statement.html">if_ Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/___if_else_____statement.html">if_else_ Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/switch__statement.html">switch_
        Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/while__statement.html">while_
        Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/___do_while_____statement.html">do_while_ Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/for_statement.html">for_ Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/try__catch__statement.html">try_
        catch_ Statement</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/statement/throw_.html">throw_</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/modules/object.html">Object</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/object/construction.html">Construction</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/object/new.html">New</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/object/delete.html">Delete</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/object/casts.html">Casts</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/modules/scope.html">Scope</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/scope/local_variables.html">Local Variables</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/scope/let.html">let</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/scope/lambda.html">lambda</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/modules/bind.html">Bind</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/bind/binding_function_objects.html">Binding
        Function Objects</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/bind/binding_functions.html">Binding Functions</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/bind/binding_member_functions.html">Binding
        Member Functions</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/bind/binding_member_variables.html">Binding
        Member Variables</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/bind/compatibility_with_boost_bind.html">Compatibility
        with Boost.Bind</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/modules/stl.html">STL</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/modules/stl/container.html">Container</a></span></dt>
<dt><span class="section"><a href="phoenix/modules/stl/algorithm.html">Algorithm</a></span></dt>
</dl></dd>
</dl></dd>
<dt><span class="section"><a href="phoenix/inside.html">Inside Phoenix</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/inside/actor.html">Actors in Detail</a></span></dt>
<dt><span class="section"><a href="phoenix/inside/expression.html">Phoenix Expressions</a></span></dt>
<dd><dl><dt><span class="section"><a href="phoenix/inside/expression/boilerplate_macros.html">Boilerplate
        Macros</a></span></dt></dl></dd>
<dt><span class="section"><a href="phoenix/inside/actions.html">More on Actions</a></span></dt>
<dt><span class="section"><a href="phoenix/inside/rules.html">Predefined Expressions and Rules</a></span></dt>
<dt><span class="section"><a href="phoenix/inside/custom_terminals.html">Custom Terminals</a></span></dt>
<dt><span class="section"><a href="phoenix/inside/placeholder_unification.html">Placeholder Unification</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/examples.html">Advanced Examples</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/examples/extending_actors.html">Extending Actors</a></span></dt>
<dt><span class="section"><a href="phoenix/examples/adding_an_expression.html">Adding an expression</a></span></dt>
<dt><span class="section"><a href="phoenix/examples/transforming_the_expression_tree.html">Transforming
      the Expression Tree</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/lazy_list.html">Lazy List</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/lazy_list/background.html">Background</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/what_is_provided.html">What is provided</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/tutorial_with_examples.html">Tutorial with
      examples</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/lazy_list/tutorial_with_examples/arithmetic_functions.html">Arithmetic
        functions</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/tutorial_with_examples/list_generation.html">List
        Generation</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/lazy_list/exceptions.html">Exceptions</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/implementation_details.html">Implementation
      Details</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/testing.html">Testing</a></span></dt>
<dt><span class="section"><a href="phoenix/lazy_list/where_next_.html">Where Next?</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="phoenix/maintenance.html">Maintenance</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/maintenance/background.html">Background</a></span></dt>
<dt><span class="section"><a href="phoenix/maintenance/my_understanding_of_how_maintenance_works.html">My
      Understanding of how maintenance works</a></span></dt>
<dt><span class="section"><a href="phoenix/maintenance/method_in_use.html">Method in use</a></span></dt>
<dt><span class="section"><a href="phoenix/maintenance/experience.html">Experience</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="phoenix/maintenance/experience/maintenance_tools.html">Maintenance
        Tools</a></span></dt>
<dt><span class="section"><a href="phoenix/maintenance/experience/bugs_to_be_fixed.html">Bugs
        to be fixed</a></span></dt>
<dt><span class="section"><a href="phoenix/maintenance/experience/compilers.html">Compilers</a></span></dt>
</dl></dd>
</dl></dd>
<dt><span class="section"><a href="phoenix/wrap_up.html">Wrap Up</a></span></dt>
<dt><span class="section"><a href="phoenix/acknowledgments.html">Acknowledgments</a></span></dt>
<dt><span class="section"><a href="phoenix/references.html">References</a></span></dt>
</dl>
</div>
<h2>
<a name="phoenix.h0"></a>
    <span class="phrase"><a name="phoenix.preface"></a></span><a class="link" href="index.html#phoenix.preface">Preface</a>
  </h2>
<div class="blockquote"><blockquote class="blockquote"><p>
      <span class="emphasis"><em>Functional programming is so called because a program consists entirely
      of functions. The main program itself is written as a function which receives
      the program's input as its argument and delivers the program's output as its
      result. Typically the main function is defined in terms of other functions,
      which in turn are defined in terms of still more functions until at the bottom
      level the functions are language primitives.</em></span>
    </p></blockquote></div>
<div class="blockquote"><blockquote class="blockquote"><p>
      <span class="bold"><strong>John Hughes</strong></span>-- <span class="emphasis"><em>Why Functional Programming
      Matters</em></span>
    </p></blockquote></div>
<p>
    <span class="inlinemediaobject"><img src="images/lambda_cpp.png"></span>
  </p>
<h3>
<a name="phoenix.h1"></a>
    <span class="phrase"><a name="phoenix.description"></a></span><a class="link" href="index.html#phoenix.description">Description</a>
  </h3>
<p>
    Phoenix enables Functional Programming (FP) in C++. The design and implementation
    of Phoenix is highly influenced by <a href="http://cgi.di.uoa.gr/~smaragd/fc++/" target="_top">FC++</a>
    by Yannis Smaragdakis and Brian McNamara and the <a href="http://www.boost.org/libs/lambda/doc/index.html" target="_top">BLL</a>
    (Boost Lambda Library) by Jaakko Jaarvi and Gary Powell. Phoenix is a blend of
    FC++ and BLL using the implementation techniques used in the <a href="http://spirit.sourceforge.net" target="_top">Spirit</a>
    inline parser.
  </p>
<p>
    Phoenix is a header only library. It is extremely modular by design. One can
    extract and use only a small subset of the full library, literally tearing the
    library into small pieces, without fear that the pieces won't work anymore. The
    library is organized in highly independent modules and layers.
  </p>
<h3>
<a name="phoenix.h2"></a>
    <span class="phrase"><a name="phoenix.how_to_use_this_manual"></a></span><a class="link" href="index.html#phoenix.how_to_use_this_manual">How
    to use this manual</a>
  </h3>
<p>
    The Phoenix library is organized in logical modules. This documentation provides
    a user's guide and reference for each module in the library. A simple and clear
    code example is worth a hundred lines of documentation; therefore, the user's
    guide is presented with abundant examples annotated and explained in step-wise
    manner. The user's guide is based on examples: lots of them.
  </p>
<p>
    As much as possible, forward information (i.e. citing a specific piece of information
    that has not yet been discussed) is avoided in the user's manual portion of each
    module. In many cases, though, it is unavoidable that advanced but related topics
    be interspersed with the normal flow of discussion. To alleviate this problem,
    topics categorized as "advanced" may be skipped at first reading.
  </p>
<p>
    Some icons are used to mark certain topics indicative of their relevance. These
    icons precede some text to indicate:
  </p>
<div class="table">
<a name="phoenix.t0"></a><p class="title"><b>Table&#160;1.1.&#160;Icons</b></p>
<div class="table-contents"><table class="table" summary="Icons">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
            <p>
              Icon
            </p>
          </th>
<th>
            <p>
              Name
            </p>
          </th>
<th>
            <p>
              Meaning
            </p>
          </th>
</tr></thead>
<tbody>
<tr>
<td>
            <p>
              <span class="inlinemediaobject"><img src="images/note.png"></span>
            </p>
          </td>
<td>
            <p>
              Note
            </p>
          </td>
<td>
            <p>
              Information provided is auxiliary but will give the reader a deeper
              insight into a specific topic. May be skipped.
            </p>
          </td>
</tr>
<tr>
<td>
            <p>
              <span class="inlinemediaobject"><img src="images/alert.png"></span>
            </p>
          </td>
<td>
            <p>
              Alert
            </p>
          </td>
<td>
            <p>
              Information provided is of utmost importance.
            </p>
          </td>
</tr>
<tr>
<td>
            <p>
              <span class="inlinemediaobject"><img src="images/tip.png"></span>
            </p>
          </td>
<td>
            <p>
              Tip
            </p>
          </td>
<td>
            <p>
              A potentially useful and helpful piece of information.
            </p>
          </td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><div class="blurb">
<div class="titlepage"><div><div><p class="title"><b></b></p></div></div></div>
<p>
    <span class="inlinemediaobject"><img src="images/note.png"></span>
    Unless otherwise noted <code class="computeroutput"><span class="keyword">using</span> <span class="keyword">namespace</span>
    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">;</span></code> is
    assumed
  </p>
</div>
<h3>
<a name="phoenix.h3"></a>
    <span class="phrase"><a name="phoenix._emphasis_role__bold___emphasis____to_joel_s_dear_daughter__phoenix__emphasis___emphasis_"></a></span><a class="link" href="index.html#phoenix._emphasis_role__bold___emphasis____to_joel_s_dear_daughter__phoenix__emphasis___emphasis_"><span class="bold"><strong><span class="emphasis"><em>...To Joel's dear daughter, Phoenix</em></span></strong></span></a>
  </h3>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"><p><small>Last revised: December 10, 2019 at 00:22:16 GMT</small></p></td>
<td align="right"><div class="copyright-footer"></div></td>
</tr></table>
<hr>
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