forked from boostorg/range
164 lines
15 KiB
HTML
164 lines
15 KiB
HTML
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
|
|
<title>unique</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="Chapter 1. Range 2.0">
|
|
<link rel="up" href="../mutating.html" title="Mutating algorithms">
|
|
<link rel="prev" href="transform.html" title="transform">
|
|
<link rel="next" href="unique_copy.html" title="unique_copy">
|
|
</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 href="../../../../../../../../libs/libraries.htm">Libraries</a></td>
|
|
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
|
|
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
|
|
<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
|
|
</tr></table>
|
|
<hr>
|
|
<div class="spirit-nav">
|
|
<a accesskey="p" href="transform.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../mutating.html"><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="unique_copy.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>
|
|
</div>
|
|
<div class="section">
|
|
<div class="titlepage"><div><div><h5 class="title">
|
|
<a name="range.reference.algorithms.mutating.unique"></a><a class="link" href="unique.html" title="unique"> unique</a>
|
|
</h5></div></div></div>
|
|
<a name="range.reference.algorithms.mutating.unique.prototype"></a><h6>
|
|
<a name="id3091012"></a>
|
|
<a class="link" href="unique.html#range.reference.algorithms.mutating.unique.prototype">Prototype</a>
|
|
</h6>
|
|
<p>
|
|
|
|
</p>
|
|
<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">return_begin_found</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">return_begin_found</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BinaryPredicate</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">return_begin_found</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">BinaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BinaryPredicate</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">return_begin_found</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">BinaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BinaryPredicate</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">BinaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span>
|
|
|
|
<span class="keyword">template</span><span class="special"><</span><span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BinaryPredicate</span><span class="special">></span>
|
|
<span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span>
|
|
<span class="identifier">unique</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">BinaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span>
|
|
</pre>
|
|
<p>
|
|
</p>
|
|
<a name="range.reference.algorithms.mutating.unique.description"></a><h6>
|
|
<a name="id3092044"></a>
|
|
<a class="link" href="unique.html#range.reference.algorithms.mutating.unique.description">Description</a>
|
|
</h6>
|
|
<p>
|
|
<code class="computeroutput"><span class="identifier">unique</span></code> removes all but
|
|
the first element of each sequence of duplicate encountered in <code class="computeroutput"><span class="identifier">rng</span></code>.
|
|
</p>
|
|
<p>
|
|
Elements in the range <code class="computeroutput"><span class="special">[</span><span class="identifier">new_last</span><span class="special">,</span>
|
|
<span class="identifier">end</span><span class="special">(</span><span class="identifier">rng</span><span class="special">))</span></code>
|
|
are dereferenceable but undefined.
|
|
</p>
|
|
<p>
|
|
Equality is determined by the predicate if one is supplied, or by <code class="computeroutput"><span class="keyword">operator</span><span class="special">==()</span></code>
|
|
for <code class="computeroutput"><span class="identifier">ForwardRange</span></code>'s value
|
|
type.
|
|
</p>
|
|
<a name="range.reference.algorithms.mutating.unique.definition"></a><h6>
|
|
<a name="id3092167"></a>
|
|
<a class="link" href="unique.html#range.reference.algorithms.mutating.unique.definition">Definition</a>
|
|
</h6>
|
|
<p>
|
|
Defined in the header file <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">range</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">unique</span><span class="special">.</span><span class="identifier">hpp</span></code>
|
|
</p>
|
|
<a name="range.reference.algorithms.mutating.unique.requirements"></a><h6>
|
|
<a name="id3092240"></a>
|
|
<a class="link" href="unique.html#range.reference.algorithms.mutating.unique.requirements">Requirements</a>
|
|
</h6>
|
|
<p>
|
|
<span class="bold"><strong>For the non-predicate versions of unique:</strong></span>
|
|
</p>
|
|
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code> is a
|
|
model of the <a class="link" href="../../../concepts/forward_range.html" title="Forward Range">Forward
|
|
Range</a> Concept.
|
|
</li>
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code> is mutable.
|
|
</li>
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code>'s value
|
|
type is a model of the <code class="computeroutput"><span class="identifier">EqualityComparableConcept</span></code>.
|
|
</li>
|
|
</ul></div>
|
|
<p>
|
|
<span class="bold"><strong>For the predicate versions of unique:</strong></span>
|
|
</p>
|
|
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code> is a
|
|
model of the <a class="link" href="../../../concepts/forward_range.html" title="Forward Range">Forward
|
|
Range</a> Concept.
|
|
</li>
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code> is mutable.
|
|
</li>
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">BinaryPredicate</span></code> is
|
|
a model of the <code class="computeroutput"><span class="identifier">BinaryPredicateConcept</span></code>.
|
|
</li>
|
|
<li class="listitem">
|
|
<code class="computeroutput"><span class="identifier">ForwardRange</span></code>'s value
|
|
type is convertible to <code class="computeroutput"><span class="identifier">BinaryPredicate</span></code>'s
|
|
first argument type and to <code class="computeroutput"><span class="identifier">BinaryPredicate</span></code>'s
|
|
second argument type.
|
|
</li>
|
|
</ul></div>
|
|
<a name="range.reference.algorithms.mutating.unique.complexity"></a><h6>
|
|
<a name="id3092474"></a>
|
|
<a class="link" href="unique.html#range.reference.algorithms.mutating.unique.complexity">Complexity</a>
|
|
</h6>
|
|
<p>
|
|
Linear. <code class="computeroutput"><span class="identifier">O</span><span class="special">(</span><span class="identifier">N</span><span class="special">)</span></code>
|
|
where <code class="computeroutput"><span class="identifier">N</span></code> is <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code>.
|
|
Exactly <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code>
|
|
comparisons are performed.
|
|
</p>
|
|
</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 © 2003 -2010 Thorsten Ottosen, Neil Groves<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="transform.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../mutating.html"><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="unique_copy.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>
|
|
</div>
|
|
</body>
|
|
</html>
|