Boost C++ Libraries

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Boost Pointer Container Library

Insert Iterators

When you work with normal value-based containers and algorithms, you often use insert iterators

std::list<int> coll1;
// ...
std::vector<int> coll2;
std::copy( coll1.begin(), coll1.end(),  
           back_inserter(coll2) ); 

With the special insert iterators for pointer containers, you can do exactly the same

boost::ptr_list<Base> coll1;
// ...
boost::ptr_vector<Base> coll2;
std::copy( coll1.begin(), coll1.end(),  
           boost::ptr_container::ptr_back_inserter(coll2) ); 

Each element is cloned and inserted into the container. Furthermore, if the source range iterates over pointers instead of references, NULL pointers can be transfered as well.

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Synopsis:

namespace boost
{      
    namespace ptr_container
    {
    
        template< class PtrContainer >
        class ptr_back_insert_iterator;
        
        template< class PtrContainer >
        class ptr_front_insert_iterator;
        
        template< class PtrContainer >
        class ptr_insert_iterator;
        
        template< class PtrContainer >
        ptr_back_insert_iterator<PtrContainer> 
        ptr_back_inserter( PtrContainer& cont );
        
        template< class PtrContainer >
        ptr_front_insert_iterator<PtrContainer> 
        ptr_front_inserter( PtrContainer& cont );
        
        template< class PtrContainer >
        ptr_insert_iterator<PtrContainer> 
        ptr_inserter( PtrContainer& cont, typename PtrContainer::iterator before );
         
    } // namespace 'ptr_container'
} // namespace 'boost'  

Copyright:Thorsten Ottosen 2008. Use, modification and distribution is subject to the Boost Software License, Version 1.0 (see LICENSE_1_0.txt).