Boost C++ Libraries

Returns the query iterator pointing at the begin of the query range.

Description

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().

Synopsis

template<typename Predicates>
const_query_iterator qbegin(Predicates const & predicates)

Modifier(s)

const

Parameter(s)

Returns

The iterator pointing at the begin of the query range.

Example

for ( Rtree::const_query_iterator it = tree.qbegin(bgi::nearest(pt, 10000)) ;
      it != tree.qend() ; ++it )
{
    // do something with value
    if ( has_enough_nearest_values() )
        break;
}

Throws

If predicates copy throws. If allocation throws.