The function object extracting Indexable from Value. More...
#include <indexable.hpp>
Public Types | |
typedef Value const & | result_type |
The type of result returned by function object. More... | |
Public Member Functions | |
BOOST_MPL_ASSERT_MSG ((detail::is_indexable< Value >::value), NOT_VALID_INDEXABLE_TYPE,(Value)) | |
result_type | operator() (Value const &v) const |
Return indexable extracted from the value. More... | |
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>, boost::tuple<Indexable, ...> and std::tuple<Indexable, ...>.
Value | The Value type which may be translated directly to the Indexable. |
IsIndexable | If true, the const reference to Value is returned. |
typedef Value const& boost::geometry::index::detail::indexable< Value, IsIndexable >::result_type |
The type of result returned by function object.
boost::geometry::index::detail::indexable< Value, IsIndexable >::BOOST_MPL_ASSERT_MSG | ( | (detail::is_indexable< Value >::value) | , |
NOT_VALID_INDEXABLE_TYPE | , | ||
(Value) | |||
) |
|
inline |
Return indexable extracted from the value.
v | The value. |
Referenced by boost::geometry::index::indexable< Value >::operator()().