arrays - AS3 How to i turn head of the Vector list? -

i have vector ip , port list , socket connection, when connection lose click button , call next ip , port vector list.

my question when finish list how turn head of list ?

this current code

public class uriiterator  {      private var _availableaddresses: vector.<socketconnection> = new vector.<socketconnection>();       public function uriiterator()      {      }       public function withaddress(host: string, port: int): uriiterator {         const a: socketconnection = new socketconnection(host, port);         _availableaddresses.push(a);         return this;     }       public function next(): socketconnection{         return _availableaddresses.length ? _availableaddresses.pop() : null;     } } 

thanks

in current implementation can traverse list once. need change code keep list unmodified:

public class uriiterator  {     private var _currentindex:int = 0;     private var _availableaddresses: vector.<socketconnection> = new vector.<socketconnection>();       public function withaddress(host: string, port: int): uriiterator {         const a: socketconnection = new socketconnection(host, port);         _availableaddresses.push(a);         return this;     }      public function first():socketconnection {         _currentindex = 0;         if (_currentindex >= _availableaddresses.length)              return null;         return _availableaddresses[_currentindex++];    }     public function next(): socketconnection {         if (_currentindex >= _availableaddresses.length)              return null;         return _availableaddresses[_currentindex++];    } } 

now first entry call const firstconn:socketconnection = iterator.first , rest of them, keep calling iterator.next.