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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_typetraits.reference.add_lvalue_reference"></a><a class="link" href="add_lvalue_reference.html" title="add_lvalue_reference">add_lvalue_reference</a>
</h3></div></div></div>
<pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">add_lvalue_reference</span>
<span class="special">{</span>
   <span class="keyword">typedef</span> <em class="replaceable"><code>see-below</code></em> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<p>
        <span class="bold"><strong>type:</strong></span> If <code class="computeroutput"><span class="identifier">T</span></code>
        names an object or function type then the member typedef <code class="computeroutput"><span class="identifier">type</span></code>
        shall name <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span></code>;
        otherwise, if <code class="computeroutput"><span class="identifier">T</span></code> names a type
        <span class="emphasis"><em>rvalue reference to U</em></span> then the member typedef type shall
        name <code class="computeroutput"><span class="identifier">U</span><span class="special">&amp;</span></code>;
        otherwise, type shall name <code class="computeroutput"><span class="identifier">T</span></code>.
      </p>
<p>
        <span class="bold"><strong>C++ Standard Reference:</strong></span> 20.7.6.2.
      </p>
<p>
        <span class="bold"><strong>Compiler Compatibility:</strong></span> If the compiler
        does not support partial specialization of class-templates then this template
        will compile, but the member <code class="computeroutput"><span class="identifier">type</span></code>
        will always be the same as type <code class="computeroutput"><span class="identifier">T</span></code>
        except where <a class="link" href="../category/transform.html#boost_typetraits.category.transform.broken_compiler_workarounds_">compiler
        workarounds</a> have been applied.
      </p>
<p>
        <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
        <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">add_lvalue_reference</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
        or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
      </p>
<div class="table">
<a name="boost_typetraits.reference.add_lvalue_reference.examples"></a><p class="title"><b>Table&#160;1.12.&#160;Examples</b></p>
<div class="table-contents"><table class="table" summary="Examples">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                <p>
                  Expression
                </p>
              </th>
<th>
                <p>
                  Result Type
                </p>
              </th>
</tr></thead>
<tbody>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span><span class="special">&amp;</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">int</span>
                  <span class="keyword">const</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span> <span class="keyword">const</span><span class="special">&amp;</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">*&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span><span class="special">*&amp;</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">*&amp;&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span><span class="special">*&amp;</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&amp;&amp;&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span><span class="special">&amp;</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">add_lvalue_reference</span><span class="special">&lt;</span><span class="keyword">void</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">void</span></code>
                </p>
              </td>
</tr>
</tbody>
</table></div>
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
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