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https://github.com/boostorg/fusion.git
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[SVN r72977]
This commit is contained in:
Eric Niebler
@ -26,35 +26,24 @@
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<div class="titlepage"><div><div><h5 class="title">
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<a name="fusion.algorithm.iteration.functions.accumulate"></a><a class="link" href="accumulate.html" title="accumulate">accumulate</a>
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</h5></div></div></div>
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<a name="fusion.algorithm.iteration.functions.accumulate.description"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.description-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.description">Description</a>
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</h6>
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<p>
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<a name="fusion.algorithm.iteration.functions.accumulate.description"></a>
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</p>
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<h6>
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<a name="id1026176"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.description">Description</a>
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</h6>
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<p>
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</p>
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<p>
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For a sequence <code class="computeroutput"><span class="identifier">seq</span></code>,
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initial state <code class="computeroutput"><span class="identifier">initial_state</span></code>,
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and binary function object or function pointer <code class="computeroutput"><span class="identifier">f</span></code>,
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<code class="literal">accumulate</code> returns the result of the repeated application
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of binary <code class="computeroutput"><span class="identifier">f</span></code> to the
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result of the previous <code class="computeroutput"><span class="identifier">f</span></code>
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invocation (<code class="computeroutput"><span class="identifier">inital_state</span></code>
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if it is the first call) and each element of <code class="computeroutput"><span class="identifier">seq</span></code>.
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</p>
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<p>
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<a name="fusion.algorithm.iteration.functions.accumulate.synopsis"></a>
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</p>
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<h6>
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<a name="id1026255"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.synopsis">Synopsis</a>
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</h6>
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<p>
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</p>
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For a sequence <code class="computeroutput"><span class="identifier">seq</span></code>, initial
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state <code class="computeroutput"><span class="identifier">initial_state</span></code>,
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and binary function object or function pointer <code class="computeroutput"><span class="identifier">f</span></code>,
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<code class="literal">accumulate</code> returns the result of the repeated application
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of binary <code class="computeroutput"><span class="identifier">f</span></code> to the result
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of the previous <code class="computeroutput"><span class="identifier">f</span></code> invocation
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(<code class="computeroutput"><span class="identifier">inital_state</span></code> if it is
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the first call) and each element of <code class="computeroutput"><span class="identifier">seq</span></code>.
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</p>
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<a name="fusion.algorithm.iteration.functions.accumulate.synopsis"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.synopsis-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
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<span class="keyword">typename</span> <span class="identifier">State</span><span class="special">,</span>
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@ -71,10 +60,8 @@
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<span class="keyword">typename</span> <a class="link" href="../metafunctions/accumulate.html" title="accumulate"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">accumulate</span></code></a><span class="special"><</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">>::</span><span class="identifier">type</span> accumulate<span class="special">(</span>
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<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
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</pre>
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<p>
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</p>
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<div class="table">
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<a name="id1026607"></a><p class="title"><b>Table 1.42. Parameters</b></p>
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<a name="id1034464"></a><p class="title"><b>Table 1.42. Parameters</b></p>
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<div class="table-contents"><table class="table" summary="Parameters">
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<colgroup>
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<col>
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@ -83,142 +70,113 @@
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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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<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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Requirement
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</p>
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</th>
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<p>
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Requirement
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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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<p>
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Description
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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">seq</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">seq</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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A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
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Sequence</a>
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</p>
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</td>
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<p>
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A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
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Sequence</a>
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</p>
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</td>
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<td>
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<p>
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Operation's argument
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</p>
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</td>
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<p>
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Operation's argument
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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">initial_state</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">initial_state</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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Any type
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</p>
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</td>
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<p>
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Any type
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</p>
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</td>
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<td>
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<p>
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Initial state
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</p>
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</td>
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<p>
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Initial state
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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">f</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">f</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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<code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">,</span>e<span class="special">)</span></code> with return type <code class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></code></a><span class="special"><</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">S</span><span class="special">,</span>E<span class="special">)>::</span><span class="identifier">type</span></code> for current state
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<code class="computeroutput"><span class="identifier">s</span></code> of type
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<code class="computeroutput"><span class="identifier">S</span></code>, and for
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each element <code class="computeroutput"><span class="identifier">e</span></code>
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of type <code class="computeroutput"><span class="identifier">E</span></code>
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in <code class="computeroutput"><span class="identifier">seq</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">,</span>e<span class="special">)</span></code> with return type <code class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></code></a><span class="special"><</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">S</span><span class="special">,</span>E<span class="special">)>::</span><span class="identifier">type</span></code> for current state <code class="computeroutput"><span class="identifier">s</span></code> of type <code class="computeroutput"><span class="identifier">S</span></code>,
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and for each element <code class="computeroutput"><span class="identifier">e</span></code>
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of type <code class="computeroutput"><span class="identifier">E</span></code> in
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<code class="computeroutput"><span class="identifier">seq</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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Operation's argument
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</p>
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</td>
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<p>
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Operation's argument
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<p><br class="table-break">
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<a name="fusion.algorithm.iteration.functions.accumulate.expression_semantics"></a>
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</p>
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<h6>
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<a name="id1026868"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.expression_semantics">Expression
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Semantics</a>
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</h6>
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<p>
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</p>
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<br class="table-break"><a name="fusion.algorithm.iteration.functions.accumulate.expression_semantics"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.expression_semantics-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.expression_semantics">Expression
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Semantics</a>
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</h6>
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<pre class="programlisting">accumulate<span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
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</pre>
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<p>
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</p>
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<span class="bold"><strong>Return type</strong></span>: Any type
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</p>
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<p>
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<span class="bold"><strong>Return type</strong></span>: Any type
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</p>
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<span class="bold"><strong>Semantics</strong></span>: Equivalent to <code class="literal">f(...
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f(f(initial_state,e1),e2) ...eN)</code> where <code class="literal">e1 ...eN</code>
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are the consecutive elements of <code class="computeroutput"><span class="identifier">seq</span></code>.
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</p>
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<a name="fusion.algorithm.iteration.functions.accumulate.complexity"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.complexity-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.complexity">Complexity</a>
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</h6>
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<p>
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</p>
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<p>
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<span class="bold"><strong>Semantics</strong></span>: Equivalent to <code class="literal">f(...
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f(f(initial_state,e1),e2) ...eN)</code> where <code class="literal">e1 ...eN</code>
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are the consecutive elements of <code class="computeroutput"><span class="identifier">seq</span></code>.
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</p>
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<p>
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<a name="fusion.algorithm.iteration.functions.accumulate.complexity"></a>
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</p>
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<h6>
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<a name="id1026951"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.complexity">Complexity</a>
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</h6>
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<p>
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</p>
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<p>
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Linear, exactly <code class="computeroutput"><a class="link" href="../../../sequence/intrinsic/metafunctions/size.html" title="size"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></code></a><span class="special"><</span><span class="identifier">Sequence</span><span class="special">>::</span><span class="identifier">value</span></code> applications of <code class="computeroutput"><span class="identifier">f</span></code>.
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</p>
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<p>
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<a name="fusion.algorithm.iteration.functions.accumulate.header"></a>
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</p>
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<h6>
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<a name="id1027011"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.header">Header</a>
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</h6>
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<p>
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</p>
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Linear, exactly <code class="computeroutput"><a class="link" href="../../../sequence/intrinsic/metafunctions/size.html" title="size"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></code></a><span class="special"><</span><span class="identifier">Sequence</span><span class="special">>::</span><span class="identifier">value</span></code> applications of <code class="computeroutput"><span class="identifier">f</span></code>.
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</p>
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<a name="fusion.algorithm.iteration.functions.accumulate.header"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.header-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.header">Header</a>
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</h6>
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<pre class="programlisting"><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">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span>accumulate<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">include</span><span class="special">/</span>accumulate<span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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<p>
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<a name="fusion.algorithm.iteration.functions.accumulate.example"></a>
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</p>
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<h6>
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<a name="id1027122"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.example">Example</a>
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</h6>
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<p>
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</p>
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<a name="fusion.algorithm.iteration.functions.accumulate.example"></a><h6>
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<a name="fusion.algorithm.iteration.functions.accumulate.example-heading"></a>
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<a class="link" href="accumulate.html#fusion.algorithm.iteration.functions.accumulate.example">Example</a>
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</h6>
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<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">make_string</span>
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<span class="special">{</span>
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<span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">result_type</span><span class="special">;</span>
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@ -233,8 +191,6 @@
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<span class="keyword">const</span> <a class="link" href="../../../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</span></code></a><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
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<span class="identifier">assert</span><span class="special">(</span>accumulate<span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">(</span><span class="string">""</span><span class="special">),</span> <span class="identifier">make_string</span><span class="special">())</span> <span class="special">==</span> "12"<span class="special">);</span>
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</pre>
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<p>
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</p>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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