server. list does not return error. amount of channels in room added.

README.md

@@ -85,8 +85,10 @@ var socket = io('ws://yourdomain.com', {transports: ['websocket']});
 		c.Join("room name")
 
 		//of course, you can list the clients in the room, or account them
-		channels, _ := c.List(data.Channel)
-		log.Println(len(channels), "clients in room")
+		channels := c.List(data.Channel)
+		//or check the amount of clients in room
+		amount := c.Amount(data.Channel)
+		log.Println(amount, "clients in room")
 	})
 	//on disconnection handler, if client hangs connection unexpectedly, it will still occurs
 	//you can omit function args if you do not need them

server.go

@@ -106,12 +106,34 @@ func (c *Channel) Leave(room string) error {
 	return nil
 }
 
+/**
+Get amount of channels, joined to given room, using channel
+*/
+func (c *Channel) Amount(room string) int {
+	if c.server == nil {
+		return 0
+	}
+
+	return c.server.Amount(room)
+}
+
+/**
+Get amount of channels, joined to given room, using server
+*/
+func (s *Server) Amount(room string) int {
+	s.channelsLock.RLock()
+	defer s.channelsLock.RUnlock()
+
+	roomChannels, _ := s.channels[room]
+	return len(roomChannels)
+}
+
 /**
 Get list of channels, joined to given room, using channel
 */
-func (c *Channel) List(room string) ([]*Channel, error) {
+func (c *Channel) List(room string) []*Channel {
 	if c.server == nil {
-		return nil, ErrorServerNotSet
+		return []*Channel{}
 	}
 
 	return c.server.List(room)
@@ -120,13 +142,13 @@ func (c *Channel) List(room string) ([]*Channel, error) {
 /**
 Get list of channels, joined to given room, using server
 */
-func (s *Server) List(room string) ([]*Channel, error) {
+func (s *Server) List(room string) []*Channel {
 	s.channelsLock.RLock()
 	defer s.channelsLock.RUnlock()
 
 	roomChannels, ok := s.channels[room]
 	if !ok {
-		return []*Channel{}, nil
+		return []*Channel{}
 	}
 
 	i := 0
@@ -136,7 +158,7 @@ func (s *Server) List(room string) ([]*Channel, error) {
 		i++
 	}
 
-	return roomChannelsCopy, nil
+	return roomChannelsCopy
 
 }