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< title > Single Pass Iterator Concept</ title >
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< h1 class = "title" > Single Pass Iterator Concept</ h1 >
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< p > A class or built-in type < tt class = "literal" >< span class = "pre" > X</ span ></ tt > models the < em > Single Pass Iterator</ em >
concept if the following expressions are valid and respect the stated
semantics.</ p >
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< tr >< th colspan = "3" > Single Pass Iterator Requirements (in addition to Incrementable Iterator and Equality
Comparable)</ th >
</ tr >
< tr >< th > Expression</ th >
< th > Return Type</ th >
< th > Assertion/Semantics /
Pre-/Post-condition</ th >
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< tr >< td >< tt class = "literal" >< span class = "pre" > ++r</ span ></ tt ></ td >
< td >< tt class = "literal" >< span class = "pre" > X& </ span ></ tt ></ td >
< td > pre: < tt class = "literal" >< span class = "pre" > r</ span ></ tt > is
dereferenceable; post:
< tt class = "literal" >< span class = "pre" > r</ span ></ tt > is dereferenceable or
< tt class = "literal" >< span class = "pre" > r</ span ></ tt > is past-the-end</ td >
</ tr >
< tr >< td >< tt class = "literal" >< span class = "pre" > a</ span > < span class = "pre" > ==</ span > < span class = "pre" > b</ span ></ tt ></ td >
< td > convertible to < tt class = "literal" >< span class = "pre" > bool</ span ></ tt ></ td >
< td >< tt class = "literal" >< span class = "pre" > ==</ span ></ tt > is an equivalence
relation over its domain</ td >
</ tr >
< tr >< td >< tt class = "literal" >< span class = "pre" > a</ span > < span class = "pre" > !=</ span > < span class = "pre" > b</ span ></ tt ></ td >
< td > convertible to < tt class = "literal" >< span class = "pre" > bool</ span ></ tt ></ td >
< td >< tt class = "literal" >< span class = "pre" > !(a</ span > < span class = "pre" > ==</ span > < span class = "pre" > b)</ span ></ tt ></ td >
</ tr >
< tr >< td >< tt class = "literal" >< span class = "pre" > iterator_traversal< X> ::type</ span ></ tt ></ td >
< td > Convertible to
< tt class = "literal" >< span class = "pre" > single_pass_traversal_tag</ span ></ tt ></ td >
< td > </ td >
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< a class = "reference" href = "SinglePassIterator.rst" > View document source</ a > .
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