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The function object extracting Indexable from Value.
It translates Value object to Indexable object. The default version handles Values which are Indexables. This template is also specialized for std::pair<Indexable, T2> and boost::tuple<Indexable, ...>.
#include <boost/geometry/index/indexable.hpp>
template<typename Value>struct indexable{// ...};
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Parameter |
Description |
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The Value type which may be translated directly to the Indexable. |
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Modifier |
Function |
Description |
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Return indexable extracted from the value. |
Return indexable extracted from the value.
result_typeoperator()(Value const &v)
const
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Type |
Name |
Description |
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The value. |
The indexable.