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< title > Incrementable Iterator Concept</ title >
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< h1 class = "title" > Incrementable Iterator Concept</ h1 >
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<!-- Copyright David Abrahams 2006. Distributed under the Boost -->
<!-- Software License, Version 1.0. (See accompanying -->
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< p > A class or built-in type < tt class = "docutils literal" >< span class = "pre" > X</ span ></ tt > models the < em > Incrementable Iterator</ em >
concept if, in addition to < tt class = "docutils literal" >< span class = "pre" > X</ span ></ tt > being Assignable and Copy
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Constructible, the following expressions are valid and respect the
stated semantics.</ p >
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< tr >< th class = "head" colspan = "3" > Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible)</ th >
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</ tr >
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< tr >< th class = "head" > Expression</ th >
< th class = "head" > Return Type</ th >
< th class = "head" > Assertion/Semantics</ th >
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</ tr >
</ thead >
< tbody valign = "top" >
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< tr >< td >< tt class = "docutils literal" >< span class = "pre" > ++r</ span ></ tt ></ td >
< td >< tt class = "docutils literal" >< span class = "pre" > X& </ span ></ tt ></ td >
< td >< tt class = "docutils literal" >< span class = "pre" > & r</ span > < span class = "pre" > ==</ span > < span class = "pre" > & ++r</ span ></ tt ></ td >
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</ tr >
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< tr >< td >< tt class = "docutils literal" >< span class = "pre" > r++</ span ></ tt ></ td >
< td >< tt class = "docutils literal" >< span class = "pre" > X</ span ></ tt ></ td >
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< td >< pre class = "first last literal-block" >
{
X tmp = r;
++r;
return tmp;
}
</ pre >
</ td >
</ tr >
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< tr >< td >< tt class = "docutils literal" >< span class = "pre" > iterator_traversal< X> ::type</ span ></ tt ></ td >
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< td > Convertible to
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< tt class = "docutils literal" >< span class = "pre" > incrementable_traversal_tag</ span ></ tt ></ td >
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< td > </ td >
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< a class = "reference external" href = "IncrementableIterator.rst" > View document source</ a > .
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