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25<div class="refentry">
26<a name="boost.compute.unique"></a><div class="titlepage"></div>
27<div class="refnamediv">
28<h2><span class="refentrytitle">Function unique</span></h2>
29<p>boost::compute::unique</p>
30</div>
31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_compute/reference.html#header.boost.compute.algorithm.unique_hpp" title="Header &lt;boost/compute/algorithm/unique.hpp&gt;">boost/compute/algorithm/unique.hpp</a>&gt;
33
34</span>
35<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">,</span> <span class="keyword">typename</span> BinaryPredicate<span class="special">&gt;</span>
36  <span class="identifier">InputIterator</span>
37  <span class="identifier">unique</span><span class="special">(</span><span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">,</span> <span class="identifier">BinaryPredicate</span> op<span class="special">,</span>
38         <span class="identifier">command_queue</span> <span class="special">&amp;</span> queue <span class="special">=</span> <span class="identifier">system</span><span class="special">::</span><span class="identifier">default_queue</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
39<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span>
40  <span class="identifier">InputIterator</span>
41  <span class="identifier">unique</span><span class="special">(</span><span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">,</span>
42         <span class="identifier">command_queue</span> <span class="special">&amp;</span> queue <span class="special">=</span> <span class="identifier">system</span><span class="special">::</span><span class="identifier">default_queue</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></div>
43<div class="refsect1">
44<a name="idm45849517998912"></a><h2>Description</h2>
45<p>Removes all consecutive duplicate elements (determined by <code class="computeroutput">op</code>) from the range [first, last). If <code class="computeroutput">op</code> is not provided, the equality operator is used.</p>
46<p>
47
48Space complexity: \Omega(4n)</p>
49<p><span class="bold"><strong>See Also:</strong></span></p>
50<p>unique_copy() </p>
51<p>
52</p>
53<p>
54</p>
55<div class="variablelist"><table border="0" class="variablelist compact">
56<colgroup>
57<col align="left" valign="top">
58<col>
59</colgroup>
60<tbody>
61<tr>
62<td><p><span class="term">Parameters:</span></p></td>
63<td><div class="variablelist"><table border="0" class="variablelist compact">
64<colgroup>
65<col align="left" valign="top">
66<col>
67</colgroup>
68<tbody>
69<tr>
70<td><p><span class="term"><code class="computeroutput">first</code></span></p></td>
71<td><p>first element in the input range </p></td>
72</tr>
73<tr>
74<td><p><span class="term"><code class="computeroutput">last</code></span></p></td>
75<td><p>last element in the input range </p></td>
76</tr>
77<tr>
78<td><p><span class="term"><code class="computeroutput">op</code></span></p></td>
79<td><p>binary operator used to check for uniqueness </p></td>
80</tr>
81<tr>
82<td><p><span class="term"><code class="computeroutput">queue</code></span></p></td>
83<td><p>command queue to perform the operation</p></td>
84</tr>
85</tbody>
86</table></div></td>
87</tr>
88<tr>
89<td><p><span class="term">Returns:</span></p></td>
90<td><p><code class="computeroutput">InputIterator</code> to the new logical end of the range</p></td>
91</tr>
92</tbody>
93</table></div>
94</div>
95</div>
96<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
97<td align="left"></td>
98<td align="right"><div class="copyright-footer">Copyright © 2013, 2014 Kyle Lutz<p>
99        Distributed under the Boost Software License, Version 1.0. (See accompanying
100        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>)
101      </p>
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