Re: std::list<T>::iterator

From:
"Daniel T." <daniel_t@earthlink.net>
Newsgroups:
comp.lang.c++
Date:
Thu, 22 May 2008 14:33:30 -0400
Message-ID:
<daniel_t-C10D8A.14333022052008@earthlink.vsrv-sjc.supernews.net>
In article
<1029279d-c9c0-4eb5-843e-f4607c8e352d@z72g2000hsb.googlegroups.com>,
 Isliguezze <isliguezze@gmail.com> wrote:

Does anybody know how to make a wrapper for that iterator? Here's my
wrapper class for std::list:

template <class T> class List {
private:
    std::list<T> *lst;
public:
    List() { lst = new std::list<T>(); }
    List(const List<T> &rhs) { lst = new std::list<T>(*rhs.lst); }
    List(int n, const T& value) { lst = new std::list<T>(n, value); }
    ~List() { delete lst; }

    void push_back(const T& value) { lst->push_back(value); }
    void push_front(const T& value) { lst->push_front(value); }
    void pop_back() { lst->pop_back; }
    void pop_front() { lst->pop_front; }
    void remove(const T& value) { lst->remove(value); }
};


First, don't contain the std::list by pointer.

   template < typename T >
class List
{
   std::list<T> rep;
public:
   typedef typename std::list<T>::iterator iterator;

   List():rep() { }
   List( int n, const T& value ): rep( n, value ) { }

   void push_back( const T& value ) { rep.push_back( value ); }
   // etc...

   iterator begin() { return rep.begin(); }
};

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