aecont.h

#ifndef AECONT_H
#define AECONT_H
#include <vector>
#include <algorithm>
template <typename T>
class alternating_endpoint_container: public std::vector<T>{
    private:
        typedef std::vector<T> base;
        bool l = true;
    public:
        alternating_endpoint_container(): base(){
        }
        template< class Iter >
        alternating_endpoint_container( Iter first, Iter last ): base(){
            std::for_each( first, last, std::bind1st( std::mem_fun( &alternating_endpoint_container::insert ), this) );
        }
        void insert( T a ){
            ( ( l = !l ) )?( base::insert( base::end(), a ) ):( base::insert( base::begin(), a ) );
        }
        void erase(){
            ( ( l = !l ) )?( base::erase( base::begin() ) ):( base::erase( base::end() - 1 ) );
        }
};
#endif // AECONT_H