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< div class = "section" >
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< div class = "titlepage" >< div >< div >< h5 class = "title" >
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< a name = "range.reference.algorithms.mutating.unique" ></ a >< a class = "link" href = "unique.html" title = "unique" > unique</ a >
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</ h5 ></ div ></ div ></ div >
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< a name = "range.reference.algorithms.mutating.unique.prototype" ></ a >< h6 >
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< a name = "id708800" ></ a >
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< a class = "link" href = "unique.html#range.reference.algorithms.mutating.unique.prototype" > Prototype</ a >
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</ 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 >
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< a name = "range.reference.algorithms.mutating.unique.description" ></ a >< h6 >
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< a name = "id709822" ></ a >
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< a class = "link" href = "unique.html#range.reference.algorithms.mutating.unique.description" > Description</ a >
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</ 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 >
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< a name = "range.reference.algorithms.mutating.unique.definition" ></ a >< h6 >
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< a name = "id709940" ></ a >
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< a class = "link" href = "unique.html#range.reference.algorithms.mutating.unique.definition" > Definition</ a >
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</ 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 >
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< a name = "range.reference.algorithms.mutating.unique.requirements" ></ a >< h6 >
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< a name = "id710010" ></ a >
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< a class = "link" href = "unique.html#range.reference.algorithms.mutating.unique.requirements" > Requirements</ a >
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</ 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" >
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< 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 >
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< li class = "listitem" >
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< code class = "computeroutput" >< span class = "identifier" > ForwardRange</ span ></ code > is mutable.
</ li >
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< li class = "listitem" >
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< 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 >
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</ 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" >
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< 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 >
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< li class = "listitem" >
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< code class = "computeroutput" >< span class = "identifier" > ForwardRange</ span ></ code > is mutable.
</ li >
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< li class = "listitem" >
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< code class = "computeroutput" >< span class = "identifier" > BinaryPredicate</ span ></ code > is
a model of the < code class = "computeroutput" >< span class = "identifier" > BinaryPredicateConcept</ span ></ code > .
</ li >
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< li class = "listitem" >
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< 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 >
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</ ul ></ div >
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< a name = "range.reference.algorithms.mutating.unique.complexity" ></ a >< h6 >
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< a name = "id710232" ></ a >
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< a class = "link" href = "unique.html#range.reference.algorithms.mutating.unique.complexity" > Complexity</ a >
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</ 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 >
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< 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 >
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