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< a name = "range.mfc_atl.const_ranges" ></ a >< a class = "link" href = "const_ranges.html" title = "const Ranges" > const Ranges</ a >
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< code class = "computeroutput" >< span class = "identifier" > range_reference</ span >< span class = "special" > < </ span >< span class = "keyword" > const</ span > < span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code >
is defined by the following algorithm. Let < code class = "computeroutput" >< span class = "identifier" > Range</ span ></ code >
be any type listed above and < code class = "computeroutput" >< span class = "identifier" > Ref</ span ></ code >
be the same as < code class = "computeroutput" >< span class = "identifier" > range_reference</ span >< span class = "special" > < </ span >< span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code > .
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< pre class = "programlisting" >< span class = "keyword" > if</ span > < span class = "special" > (</ span >< span class = "identifier" > Range</ span > < span class = "identifier" > is</ span > < span class = "identifier" > CObArray</ span > < span class = "special" > ||</ span > < span class = "identifier" > Range</ span > < span class = "identifier" > is</ span > < span class = "identifier" > CObList</ span >< span class = "special" > )</ span >
< span class = "keyword" > return</ span > < span class = "identifier" > CObject</ span > < span class = "keyword" > const</ span > < span class = "special" > *</ span > < span class = "special" > & </ span >
< span class = "keyword" > else</ span > < span class = "keyword" > if</ span > < span class = "special" > (</ span >< span class = "identifier" > Range</ span > < span class = "identifier" > is</ span > < span class = "identifier" > CPtrArray</ span > < span class = "special" > ||</ span > < span class = "identifier" > Range</ span > < span class = "identifier" > is</ span > < span class = "identifier" > CPtrList</ span >< span class = "special" > )</ span >
< span class = "keyword" > return</ span > < span class = "keyword" > void</ span > < span class = "keyword" > const</ span > < span class = "special" > *</ span > < span class = "special" > & </ span >
< span class = "keyword" > else</ span > < span class = "keyword" > if</ span > < span class = "special" > (</ span >< span class = "identifier" > there</ span > < span class = "identifier" > is</ span > < span class = "identifier" > a</ span > < span class = "identifier" > type</ span > < span class = "identifier" > X</ span > < span class = "identifier" > such</ span > < span class = "identifier" > that</ span > < span class = "identifier" > X</ span >< span class = "special" > & </ span > < span class = "identifier" > is</ span > < span class = "identifier" > the</ span > < span class = "identifier" > same</ span > < span class = "identifier" > as</ span > < span class = "identifier" > Ref</ span >< span class = "special" > )</ span >
< span class = "keyword" > return</ span > < span class = "identifier" > X</ span > < span class = "keyword" > const</ span > < span class = "special" > & </ span >
< span class = "keyword" > else</ span > < span class = "keyword" > if</ span > < span class = "special" > (</ span >< span class = "identifier" > there</ span > < span class = "identifier" > is</ span > < span class = "identifier" > a</ span > < span class = "identifier" > type</ span > < span class = "identifier" > X</ span > < span class = "identifier" > such</ span > < span class = "identifier" > that</ span > < span class = "identifier" > X</ span >< span class = "special" > *</ span > < span class = "keyword" > const</ span > < span class = "identifier" > is</ span > < span class = "identifier" > the</ span > < span class = "identifier" > same</ span > < span class = "identifier" > as</ span > < span class = "identifier" > Ref</ span >< span class = "special" > )</ span >
< span class = "keyword" > return</ span > < span class = "identifier" > X</ span > < span class = "keyword" > const</ span > < span class = "special" > *</ span > < span class = "keyword" > const</ span >
< span class = "keyword" > else</ span >
< span class = "keyword" > return</ span > < span class = "identifier" > Ref</ span >
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Other Boost.Range metafunctions are defined by the following.
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Range metafunction
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Result
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< code class = "computeroutput" >< span class = "identifier" > range_value</ span >< span class = "special" > < </ span >< span class = "keyword" > const</ span > < span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code >
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< code class = "computeroutput" >< span class = "identifier" > range_value</ span >< span class = "special" > < </ span >< span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code >
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< code class = "computeroutput" >< span class = "identifier" > range_difference</ span >< span class = "special" > < </ span >< span class = "keyword" > const</ span >
< span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code >
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< code class = "computeroutput" >< span class = "identifier" > std</ span >< span class = "special" > ::</ span >< span class = "identifier" > ptrdiff_t</ span ></ code >
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< code class = "computeroutput" >< span class = "identifier" > range_pointer</ span >< span class = "special" > < </ span >< span class = "keyword" > const</ span > < span class = "identifier" > Range</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ code >
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< code class = "computeroutput" >< span class = "identifier" > add_pointer</ span >< span class = "special" > < </ span >< span class = "identifier" > remove_reference</ span >< span class = "special" > < </ span >< span class = "identifier" > range_reference</ span >< span class = "special" > < </ span >< span class = "keyword" > const</ span > < span class = "identifier" > Range</ 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 = "identifier" > type</ span ></ code >
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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