Stop using the Hashable interface.

runtime/bin/socket.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 abstract class ServerSocket {
   /**
    * Constructs a new server socket, binds it to a given address and port,
    * and listens on it.
    */
   factory ServerSocket(String bindAddress, int port, int backlog) {
@@ skipping 16 matching lines @@
    */
   int get port;
 
   /**
    * Closes the socket.
    */
   void close();
 }
 
 
-abstract class Socket implements Hashable {
+abstract class Socket  {

[Mads Ager (google), 2012/09/27 12:48:27]

space

   /**
    * Constructs a new socket and initiate connecting it to the given
    * host on the given port. The returned socket is not yet connected
    * but ready for registration of callbacks.
    */
   factory Socket(String host, int port) => new _Socket(host, port);
 
   /**
    * Returns the number of received and non-read bytes in the socket that
    * can be read.
@@ skipping 100 matching lines @@
         sb.add(" ($osError)");
       }
     } else if (osError != null) {
       sb.add(": $osError");
     }
     return sb.toString();
   }
   final String message;
   final OSError osError;
 }