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< div class = "titlepage" >< div >< div >< h4 class = "title" >
< a name = "fusion.iterator.metafunctions.advance_c" ></ a >< a href = "advance_c.html" title = "advance_c" > advance_c</ a ></ h4 ></ div ></ div ></ div >
< a name = "fusion.iterator.metafunctions.advance_c.description" ></ a >< h5 >
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< a name = "id489305" ></ a >
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< a href = "advance_c.html#fusion.iterator.metafunctions.advance_c.description" > Description</ a >
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< p >
Moves an iterator by a specified distance.
</ p >
< a name = "fusion.iterator.metafunctions.advance_c.synopsis" ></ a >< h5 >
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< a name = "id489336" ></ a >
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< a href = "advance_c.html#fusion.iterator.metafunctions.advance_c.synopsis" > Synopsis</ a >
</ h5 >
< pre class = "programlisting" >
< span class = "keyword" > template</ span >< span class = "special" > < </ span >
< span class = "keyword" > typename</ span > < span class = "identifier" > I</ span >< span class = "special" > ,</ span >
< span class = "keyword" > int</ span > < span class = "identifier" > N</ span >
< span class = "special" > > </ span >
< span class = "keyword" > struct</ span > < span class = "identifier" > advance_c</ span >
< span class = "special" > {</ span >
< span class = "keyword" > typedef</ span > < span class = "emphasis" >< em > unspecified</ em ></ span > < span class = "identifier" > type</ span >< span class = "special" > ;</ span >
< span class = "special" > };</ span >
</ pre >
< div class = "table" >
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< a name = "id489455" ></ a >< p class = "title" >< b > Table </ b ></ p >
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< table class = "table" summary = "Parameters" >
< colgroup >
< col >
< col >
< col >
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< thead >< tr >
< th >
< p >
Parameter
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</ th >
< th >
< p >
Requirement
</ p >
</ th >
< th >
< p >
Description
</ p >
</ th >
</ tr ></ thead >
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< tr >
< td >
< p >
< tt class = "computeroutput" >< span class = "identifier" > I</ span ></ tt >
</ p >
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< td >
< p >
Model of < a href = "../concepts/forward_iterator.html" title = "Forward
Iterator" > Forward
Iterator</ a >
</ p >
</ td >
< td >
< p >
Iterator to move relative to
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< span class = "identifier" > N</ span ></ tt >
</ p >
</ td >
< td >
< p >
Integer constant
</ p >
</ td >
< td >
< p >
Number of positions to move
</ p >
</ td >
</ tr >
</ tbody >
</ table >
</ div >
< a name = "fusion.iterator.metafunctions.advance_c.expression_semantics" ></ a >< h5 >
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< a name = "id489593" ></ a >
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< a href = "advance_c.html#fusion.iterator.metafunctions.advance_c.expression_semantics" > Expression
Semantics</ a >
</ h5 >
< pre class = "programlisting" >
< a href = "advance_c.html" title = "advance_c" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > advance_c</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > I</ span >< span class = "special" > ,</ span > < span class = "identifier" > N</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span >
</ pre >
< p >
< span class = "bold" >< b > Return type</ b ></ span > : A model of the same iterator
concept as < tt class = "computeroutput" >< span class = "identifier" > I</ span ></ tt > .
</ p >
< p >
< span class = "bold" >< b > Semantics</ b ></ span > : Returns an iterator a distance
< tt class = "computeroutput" >< span class = "identifier" > N</ span ></ tt > from < tt class = "computeroutput" >< span class = "identifier" > I</ span ></ tt > .
If < tt class = "computeroutput" >< span class = "identifier" > I</ span ></ tt > is a < a href = "../concepts/bidirectional_iterator.html" title = "Bidirectional
Iterator" > Bidirectional
Iterator</ a > then < tt class = "computeroutput" >< span class = "identifier" > N</ span ></ tt >
may be negative. Equivalent to < tt class = "computeroutput" >< a href = "advance.html" title = "advance" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > advance</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > I</ span >< span class = "special" > ,</ span > < span class = "identifier" > boost</ span >< span class = "special" > ::</ span >< span class = "identifier" > mpl</ span >< span class = "special" > ::</ span >< span class = "identifier" > int_</ span >< span class = "special" > < </ span >< span class = "identifier" > N</ span >< span class = "special" > > </ span > < span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ tt > .
</ p >
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< a href = "advance_c.html#fusion.iterator.metafunctions.advance_c.header" > Header</ a >
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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" > iterator</ span >< span class = "special" > /</ span >< span class = "identifier" > advance</ span >< span class = "special" > .</ span >< span class = "identifier" > hpp</ span >< span class = "special" > > </ 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" > include</ span >< span class = "special" > /</ span >< span class = "identifier" > advance</ span >< span class = "special" > .</ span >< span class = "identifier" > hpp</ span >< span class = "special" > > </ span >
</ pre >
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< a name = "fusion.iterator.metafunctions.advance_c.example" ></ a >< h5 >
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< a name = "id490032" ></ a >
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< a href = "advance_c.html#fusion.iterator.metafunctions.advance_c.example" > Example</ a >
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< pre class = "programlisting" >
< span class = "keyword" > typedef</ span > < a href = "../../container/vector.html" title = "vector" >< tt class = "computeroutput" >< span class = "identifier" > vector</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "keyword" > int</ span >< span class = "special" > ,</ span >< span class = "keyword" > double</ span >< span class = "special" > ,</ span >< span class = "keyword" > char</ span >< span class = "special" > > </ span > < span class = "identifier" > vec</ span >< span class = "special" > ;</ span >
< span class = "keyword" > typedef</ span > < a href = "../../sequence/intrinsic/metafunctions/begin.html" title = "begin" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > begin</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > vec</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span > < span class = "identifier" > first</ span >< span class = "special" > ;</ span >
< span class = "keyword" > typedef</ span > < a href = "next.html" title = "next" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > next</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > first</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span > < span class = "identifier" > second</ span >< span class = "special" > ;</ span >
< span class = "keyword" > typedef</ span > < a href = "next.html" title = "next" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > next</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > second</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span > < span class = "identifier" > third</ span >< span class = "special" > ;</ span >
< span class = "identifier" > BOOST_MPL_ASSERT</ span >< span class = "special" > ((</ span >< a href = "equal_to.html" title = "equal_to" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > equal_to</ span ></ tt ></ a >< span class = "special" > < </ span >< a href = "advance_c.html" title = "advance_c" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > advance_c</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > first</ span >< span class = "special" > ,</ span > < span class = "number" > 2</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span >< span class = "special" > ,</ span > < span class = "identifier" > third</ span >< span class = "special" > > ));</ span >
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< td align = "right" >< div class = "copyright-footer" > Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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Schwinger< 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 > )
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