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<div class="section" lang="en">
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<div class="titlepage"><div><div><h4 class="title">
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<a name="fusion.sequences.containers.vector"></a><a href="vector.html" title="vector">vector</a></h4></div></div></div>
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<a name="fusion.sequences.containers.vector.description"></a><h5>
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<a name="id976040"></a>
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<a href="vector.html#fusion.sequences.containers.vector.description">Description</a>
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</h5>
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<p>
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<code class="computeroutput"><span class="identifier">vector</span></code> is a <a href="../concepts/random_access_sequence.html" title="Random
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Access Sequence">Random
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Access Sequence</a> of heterogenous typed data structured as a simple
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<code class="computeroutput"><span class="keyword">struct</span></code> where each element
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is held as a member variable. <code class="computeroutput"><span class="identifier">vector</span></code>
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is the simplest of the Fusion sequence container, and in many cases the
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most efficient.
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</p>
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<a name="fusion.sequences.containers.vector.header"></a><h5>
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<a name="id976108"></a>
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<a href="vector.html#fusion.sequences.containers.vector.header">Header</a>
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</h5>
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<pre class="programlisting">
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector_fwd</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="comment">// numbered forms
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</span><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector10</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector20</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector30</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector40</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">container</span><span class="special">/</span><span class="identifier">vector</span><span class="special">/</span><span class="identifier">vector50</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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<a name="fusion.sequences.containers.vector.synopsis"></a><h5>
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<a name="id976642"></a>
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<a href="vector.html#fusion.sequences.containers.vector.synopsis">Synopsis</a>
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</h5>
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<p>
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<span class="bold"><strong>Numbered forms</strong></span>
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</p>
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<pre class="programlisting">
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<span class="keyword">template</span> <span class="special"><></span>
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<span class="keyword">struct</span> <span class="identifier">vector0</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T0</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">vector1</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T1</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">vector2</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T2</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">vector3</span><span class="special">;</span>
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<span class="special">...</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T2</span><span class="special">...,</span> <span class="keyword">typename</span> <span class="identifier">TN</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">vectorN</span><span class="special">;</span>
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</pre>
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<p>
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<span class="bold"><strong>Variadic form</strong></span>
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</p>
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<pre class="programlisting">
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<span class="keyword">template</span> <span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">T0</span> <span class="special">=</span> <span class="emphasis"><em>unspecified</em></span>
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<span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T1</span> <span class="special">=</span> <span class="emphasis"><em>unspecified</em></span>
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<span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T2</span> <span class="special">=</span> <span class="emphasis"><em>unspecified</em></span>
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<span class="special">...</span>
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<span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">TN</span> <span class="special">=</span> <span class="emphasis"><em>unspecified</em></span>
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<span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">vector</span><span class="special">;</span>
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</pre>
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<p>
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The numbered form accepts the exact number of elements. Example:
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</p>
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<pre class="programlisting">
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<span class="identifier">vector3</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">,</span> <span class="keyword">double</span><span class="special">></span>
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</pre>
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<p>
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The variadic form accepts <code class="computeroutput"><span class="number">0</span></code>
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to <code class="computeroutput"><span class="identifier">FUSION_MAX_VECTOR_SIZE</span></code>
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elements, where <code class="computeroutput"><span class="identifier">FUSION_MAX_VECTOR_SIZE</span></code>
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is a user definable predefined maximum that defaults to <code class="computeroutput"><span class="number">10</span></code>.
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Example:
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</p>
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<pre class="programlisting">
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||
<span class="identifier">vector</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">,</span> <span class="keyword">double</span><span class="special">></span>
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</pre>
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<p>
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You may define the preprocessor constant <code class="computeroutput"><span class="identifier">FUSION_MAX_VECTOR_SIZE</span></code>
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before including any Fusion header to change the default. Example:
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</p>
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<pre class="programlisting">
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<span class="preprocessor">#define</span> <span class="identifier">FUSION_MAX_VECTOR_SIZE</span> <span class="number">20</span>
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</pre>
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<a name="fusion.sequences.containers.vector.template_parameters"></a><h5>
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<a name="id977298"></a>
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<a href="vector.html#fusion.sequences.containers.vector.template_parameters">Template
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parameters</a>
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||
</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Parameter
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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<th>
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<p>
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Default
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</p>
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</th>
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</tr></thead>
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<tbody><tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">T0</span></code>...<code class="computeroutput"><span class="identifier">TN</span></code>
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</p>
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</td>
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<td>
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<p>
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Element types
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</p>
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</td>
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<td>
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<p>
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<span class="emphasis"><em>unspecified</em></span>
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</p>
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</td>
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</tr></tbody>
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</table></div>
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<a name="fusion.sequences.containers.vector.model_of"></a><h5>
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<a name="id977405"></a>
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<a href="vector.html#fusion.sequences.containers.vector.model_of">Model of</a>
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||
</h5>
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||
<div class="itemizedlist"><ul type="disc"><li><a href="../concepts/random_access_sequence.html" title="Random
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||
Access Sequence">Random
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||
Access Sequence</a></li></ul></div>
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<div class="variablelist">
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<p class="title"><b>Notation</b></p>
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<dl>
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||
<dt><span class="term"><code class="computeroutput"><span class="identifier">v</span></code></span></dt>
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<dd>
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Instance of <code class="computeroutput"><span class="identifier">vector</span></code>
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">V</span></code></span></dt>
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<dd>
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A <code class="computeroutput"><span class="identifier">vector</span></code> type
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">e0</span></code>...<code class="computeroutput"><span class="identifier">en</span></code></span></dt>
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<dd>
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Heterogeneous values
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</dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
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<dd>
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A <a href="../concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>
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</dd>
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</dl>
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||
</div>
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<a name="fusion.sequences.containers.vector.expression_semantics"></a><h5>
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<a name="id977554"></a>
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<a href="vector.html#fusion.sequences.containers.vector.expression_semantics">Expression
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Semantics</a>
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</h5>
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||
<p>
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Semantics of an expression is defined only where it differs from, or is
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||
not defined in <a href="../concepts/random_access_sequence.html" title="Random
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Access Sequence">Random
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Access Sequence</a>.
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||
</p>
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||
<div class="informaltable"><table class="table">
|
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<colgroup>
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||
<col>
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||
<col>
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</colgroup>
|
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<thead><tr>
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<th>
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<p>
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Expression
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||
</p>
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</th>
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<th>
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||
<p>
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Semantics
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</p>
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||
</th>
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||
</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">V</span><span class="special">()</span></code>
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</p>
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</td>
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<td>
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<p>
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Creates a vector with default constructed elements.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">V</span><span class="special">(</span><span class="identifier">e0</span><span class="special">,</span>
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<span class="identifier">e1</span><span class="special">,...</span>
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<span class="identifier">en</span><span class="special">)</span></code>
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</p>
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</td>
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<td>
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<p>
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Creates a vector with elements <code class="computeroutput"><span class="identifier">e0</span></code>...<code class="computeroutput"><span class="identifier">en</span></code>.
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</p>
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</td>
|
||
</tr>
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||
<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">V</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
|
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</p>
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</td>
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<td>
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<p>
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Copy constructs a vector from a <a href="../concepts/forward_sequence.html" title="Forward
|
||
Sequence">Forward
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Sequence</a>, <code class="computeroutput"><span class="identifier">s</span></code>.
|
||
</p>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<p>
|
||
<code class="computeroutput"><span class="identifier">v</span> <span class="special">=</span>
|
||
<span class="identifier">s</span></code>
|
||
</p>
|
||
</td>
|
||
<td>
|
||
<p>
|
||
Assigns to a vector, <code class="computeroutput"><span class="identifier">v</span></code>,
|
||
from a <a href="../concepts/forward_sequence.html" title="Forward
|
||
Sequence">Forward
|
||
Sequence</a>, <code class="computeroutput"><span class="identifier">s</span></code>.
|
||
</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
<a name="fusion.sequences.containers.vector.example"></a><h5>
|
||
<a name="id977858"></a>
|
||
<a href="vector.html#fusion.sequences.containers.vector.example">Example</a>
|
||
</h5>
|
||
<pre class="programlisting">
|
||
<span class="identifier">vector</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">float</span><span class="special">></span> <span class="identifier">v</span><span class="special">(</span><span class="number">12</span><span class="special">,</span> <span class="number">5.5f</span><span class="special">);</span>
|
||
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <a href="../intrinsics/functions/at_c.html" title="at_c"><code class="computeroutput"><span class="identifier">at_c</span></code></a><span class="special"><</span><span class="number">0</span><span class="special">>(</span><span class="identifier">v</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
|
||
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <a href="../intrinsics/functions/at_c.html" title="at_c"><code class="computeroutput"><span class="identifier">at_c</span></code></a><span class="special"><</span><span class="number">1</span><span class="special">>(</span><span class="identifier">v</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
|
||
</pre>
|
||
</div>
|
||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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||
<td align="left"></td>
|
||
<td align="right"><small>Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
|
||
Schwinger</small></td>
|
||
</tr></table>
|
||
<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="../containers.html"><img src="../../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../containers.html"><img src="../../../images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../images/home.png" alt="Home"></a><a accesskey="n" href="cons.html"><img src="../../../images/next.png" alt="Next"></a>
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