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< div class = "section" title = "Function join" >
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< a name = "range.reference.utilities.join" > < / a > < a class = "link" href = "join.html" title = "Function join" > Function join< / a >
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The intention of the < code class = "computeroutput" > < span class = "identifier" > join< / span > < / code >
function is to join two ranges into one longer range.
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The resultant range will have the lowest common traversal of the two ranges
supplied as parameters.
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Note that the joined range incurs a performance cost due to the need to
check if the end of a range has been reached internally during traversal.
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< a name = "range.reference.utilities.join.synposis" > < / a > < h5 >
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< a class = "link" href = "join.html#range.reference.utilities.join.synposis" > Synposis< / a >
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< pre class = "programlisting" > < span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > typename< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > ,< / span > < span class = "keyword" > typename< / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > > < / span >
< span class = "identifier" > iterator_range< / span > < span class = "special" > < < / span > < span class = "identifier" > range_detail< / span > < span class = "special" > ::< / span > < span class = "identifier" > join_iterator< / span > < span class = "special" > < < / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_iterator< / span > < span class = "special" > < < / span > < span class = "keyword" > const< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > ,< / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_iterator< / span > < span class = "special" > < < / span > < span class = "keyword" > const< / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > ,< / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > add_const< / span > < span class = "special" > < < / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_value< / span > < span class = "special" > < < / span > < span class = "keyword" > const< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > > < / span >
< span class = "special" > > < / span >
< span class = "identifier" > join< / span > < span class = "special" > (< / span > < span class = "keyword" > const< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > & < / span > < span class = "identifier" > rng1< / span > < span class = "special" > ,< / span > < span class = "keyword" > const< / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > & < / span > < span class = "identifier" > rng2< / span > < span class = "special" > )< / span >
< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > typename< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > ,< / span > < span class = "keyword" > typename< / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > > < / span >
< span class = "identifier" > iterator_range< / span > < span class = "special" > < < / span > < span class = "identifier" > range_detail< / span > < span class = "special" > ::< / span > < span class = "identifier" > join_iterator< / span > < span class = "special" > < < / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_iterator< / span > < span class = "special" > < < / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > ,< / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_iterator< / span > < span class = "special" > < < / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > ,< / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > range_value< / span > < span class = "special" > < < / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > > < / span >
< span class = "special" > > < / span >
< span class = "identifier" > join< / span > < span class = "special" > (< / span > < span class = "identifier" > SinglePassRange1< / span > < span class = "special" > & < / span > < span class = "identifier" > rng1< / span > < span class = "special" > ,< / span > < span class = "identifier" > SinglePassRange2< / span > < span class = "special" > & < / span > < span class = "identifier" > rng2< / span > < span class = "special" > );< / span >
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< a name = "range.reference.utilities.join.example" > < / a > < h5 >
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< a name = "id3166459" > < / a >
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< a class = "link" href = "join.html#range.reference.utilities.join.example" > Example< / a >
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The expression < code class = "computeroutput" > < span class = "identifier" > join< / span > < span class = "special" > (< / span > < span class = "identifier" > irange< / span > < span class = "special" > (< / span > < span class = "number" > 0< / span > < span class = "special" > ,< / span > < span class = "number" > 5< / span > < span class = "special" > ),< / span > < span class = "identifier" > irange< / span > < span class = "special" > (< / span > < span class = "number" > 5< / span > < span class = "special" > ,< / span > < span class = "number" > 10< / span > < span class = "special" > ))< / span > < / code > would
evaluate to a range representing an integer range < code class = "computeroutput" > < span class = "special" > [< / span > < span class = "number" > 0< / span > < span class = "special" > ,< / span > < span class = "number" > 10< / span > < span class = "special" > )< / span > < / code >
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