...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns the query iterator pointing at the begin of the query range.
This method returns the iterator which may be used to perform iterative queries. For the information about the predicates which may be passed to this method see query().
template<
typename Value
,
typename Parameters
,
typename IndexableGetter
,
typename EqualTo
,
typename Allocator
,
typename Predicates
>
rtree<Value, Parameters, IndexableGetter, EqualTo, Allocator>::const_query_iterator boost::geometry::index::qbegin
(
rtree< Value, Parameters, IndexableGetter, EqualTo, Allocator > const &
tree
,
Predicates const &
predicates
)
Type |
Name |
Description |
---|---|---|
|
|
The rtree. |
|
|
Predicates. |
The iterator pointing at the begin of the query range.
for ( Rtree::const_query_iterator it = qbegin(tree, bgi::nearest(pt, 10000)) ; it != qend(tree) ; ++it ) { // do something with value if ( has_enough_nearest_values() ) break; }
If predicates copy throws. If allocation throws.