<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Struct template literal</title> <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../proto/reference.html#header.boost.proto.literal_hpp" title="Header <boost/proto/literal.hpp>"> <link rel="prev" href="wants_basic_expr.html" title="Struct template wants_basic_expr"> <link rel="next" href="lit.html" title="Function lit"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> <td align="center"><a href="../../../../index.html">Home</a></td> <td align="center"><a 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simple wrapper for a terminal, provided for ease of use.</p> </div> <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../proto/reference.html#header.boost.proto.literal_hpp" title="Header <boost/proto/literal.hpp>">boost/proto/literal.hpp</a>> </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../../Domain.html" title="Concept Domain">Domain</a> <span class="special">=</span> <a class="link" href="default_domain.html" title="Struct default_domain">proto::default_domain</a><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="literal.html" title="Struct template literal">literal</a> <span class="special">:</span> <span class="keyword"></span> <a class="link" href="extends.html" title="Struct template extends">proto::extends</a><span class="special"><</span><a class="link" href="basic_expr.html" title="Struct template basic_expr">proto::basic_expr</a><span class="special"><</span><a class="link" href="tag/terminal.html" title="Struct terminal">proto::tag::terminal</a><span class="special">,</span> <a class="link" href="term.html" title="Struct template term">proto::term</a><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> <span class="special">></span><span class="special">,</span> <span class="identifier">proto</span><span class="special">::</span><span class="identifier">literal</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">Domain</span><span class="special">></span><span class="special">,</span> <span class="identifier">Domain</span><span class="special">></span> <span class="special">{</span> <span class="comment">// types</span> <span class="keyword">typedef</span> <a class="link" href="basic_expr.html" title="Struct template basic_expr">proto::basic_expr</a><span class="special"><</span><a class="link" href="tag/terminal.html" title="Struct terminal">proto::tag::terminal</a><span class="special">,</span> <a class="link" href="term.html" title="Struct template term">proto::term</a><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> <span class="special">></span> <a name="boost.proto.literal.X"></a><span class="identifier">X</span><span class="special">;</span> <span class="comment">// For exposition only</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="link" href="result_of/value.html" title="Struct template value">proto::result_of::value</a><span class="special"><</span><span class="identifier">X</span><span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a name="boost.proto.literal.value_type"></a><span class="identifier">value_type</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="link" href="result_of/value.html" title="Struct template value">proto::result_of::value</a><span class="special"><</span><span class="identifier">X</span> <span class="special">&</span><span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a name="boost.proto.literal.reference"></a><span class="identifier">reference</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="link" href="result_of/value.html" title="Struct template value">proto::result_of::value</a><span class="special"><</span><span class="identifier">X</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a name="boost.proto.literal.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span> <span class="comment">// <a class="link" href="literal.html#boost.proto.literalconstruct-copy-destruct">construct/copy/destruct</a></span> <a class="link" href="literal.html#id1260328-bb"><span class="identifier">literal</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a class="link" href="literal.html#id1260331-bb"><span class="identifier">literal</span></a><span class="special">(</span><span class="identifier">U</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a class="link" href="literal.html#id1260352-bb"><span class="identifier">literal</span></a><span class="special">(</span><span class="identifier">U</span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a class="link" href="literal.html#id1260374-bb"><span class="identifier">literal</span></a><span class="special">(</span><a class="link" href="literal.html" title="Struct template literal">proto::literal</a><span class="special"><</span> <span class="identifier">U</span><span class="special">,</span> <span class="identifier">Domain</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="comment">// <a class="link" href="literal.html#id1260281-bb">public member functions</a></span> <span class="identifier">reference</span> <a class="link" href="literal.html#id1260286-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> <span class="identifier">const_reference</span> <a class="link" href="literal.html#id1260305-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> <a name="id2327626"></a><h2>Description</h2> <p> A simple wrapper for a terminal, provided for ease of use. In all cases, <code class="computeroutput">proto::literal<X> l(x);</code> is equivalent to <code class="computeroutput"><a class="link" href="terminal.html" title="Struct template terminal">proto::terminal</a><X>::type l = {x};</code>. </p> <p> The <code class="computeroutput">Domain</code> template parameter defaults to <code class="computeroutput"><a class="link" href="default_domain.html" title="Struct default_domain">proto::default_domain</a></code>. </p> <div class="refsect2"> <a name="id2327676"></a><h3> <a name="boost.proto.literalconstruct-copy-destruct"></a><code class="computeroutput">literal</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"><pre class="literallayout"><a name="id1260328-bb"></a><span class="identifier">literal</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a name="id1260331-bb"></a><span class="identifier">literal</span><span class="special">(</span><span class="identifier">U</span> <span class="special">&</span> u<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a name="id1260352-bb"></a><span class="identifier">literal</span><span class="special">(</span><span class="identifier">U</span> <span class="keyword">const</span> <span class="special">&</span> u<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> U<span class="special">></span> <a name="id1260374-bb"></a><span class="identifier">literal</span><span class="special">(</span><a class="link" href="literal.html" title="Struct template literal">proto::literal</a><span class="special"><</span> <span class="identifier">U</span><span class="special">,</span> <span class="identifier">Domain</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span> u<span class="special">)</span><span class="special">;</span></pre></li> </ol></div> </div> <div class="refsect2"> <a name="id2327944"></a><h3> <a name="id1260281-bb"></a><code class="computeroutput">literal</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout"><span class="identifier">reference</span> <a name="id1260286-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Returns:</span></p></td> <td><code class="computeroutput"><a class="link" href="value_id1285613.html" title="Function value">proto::value</a>(*this)</code></td> </tr></tbody> </table></div> </li> <li class="listitem"> <pre class="literallayout"><span class="identifier">const_reference</span> <a name="id1260305-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term">Returns:</span></p></td> <td><code class="computeroutput"><a class="link" href="value_id1285613.html" title="Function value">proto::value</a>(*this)</code></td> </tr></tbody> </table></div> </li> </ol></div> </div> </div> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<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></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="wants_basic_expr.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.literal_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="lit.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>