Re: [Flashcoders] E4X question: counting number of subnodes
Hello fellow flashcoders, I'm still struggling with my e4x problem. With Kenneth's help I've got it partly working for the cases where each game has at least 1 user node: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); This works well. But once I have a game with no user's, i.e. game/game or just game/ it fails with runtime error: ReferenceError: Error #1065: Variable user is not defined. I know, that when using e4x you're first supposed to test for a game.user.length()!=0 before referencing a user node. But how do you do it in this case, when I'm trying to count total numbers? Thank you Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
You can use elements() (and attributes()) to avoid getting the error, i.e. trace(Full games: + games.game.(elements(user).length() == 3).length()); Kenneth Kawamoto http://www.materiaprima.co.uk/ On 26/08/2010 11:00, Alexander Farber wrote: Hello fellow flashcoders, I'm still struggling with my e4x problem. With Kenneth's help I've got it partly working for the cases where each game has at least 1 user node: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); This works well. But once I have a game with no user's, i.e.game/game or justgame/ it fails with runtime error: ReferenceError: Error #1065: Variable user is not defined. I know, that when using e4x you're first supposed to test for a game.user.length()!=0 before referencing a user node. But how do you do it in this case, when I'm trying to count total numbers? Thank you Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
I meant attribute() - attribute() and attributes() are quite different things ;) Kenneth Kawamoto http://www.materiaprima.co.uk/ On 26/08/2010 11:41, Kenneth Kawamoto wrote: You can use elements() (and attributes()) to avoid getting the error, i.e. trace(Full games: + games.game.(elements(user).length() == 3).length()); Kenneth Kawamoto http://www.materiaprima.co.uk/ On 26/08/2010 11:00, Alexander Farber wrote: Hello fellow flashcoders, I'm still struggling with my e4x problem. With Kenneth's help I've got it partly working for the cases where each game has at least 1 user node: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); This works well. But once I have a game with no user's, i.e.game/game or justgame/ it fails with runtime error: ReferenceError: Error #1065: Variable user is not defined. I know, that when using e4x you're first supposed to test for a game.user.length()!=0 before referencing a user node. But how do you do it in this case, when I'm trying to count total numbers? Thank you Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
Thank you for the pointers, I'll read up on child() and attribute() - I've missed them in the docs somehow ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
Hello Kenneth and others,
On Thu, Aug 19, 2010 at 9:05 PM, Kenneth Kawamoto
kennethkawam...@gmail.com wrote:
trace(Full games: + games.game.(user.length() == 3).length());
trace(Vacant games: + games.game.(user.length() 3).length());
thank you - now my Flash code is working,
but my Flex code is still not working and
I've already spent several days on it. Here is
the test case (a copy and screenshot are at
http://stackoverflow.com/questions/3517298/flex-listening-for-collectionevent-in-custom-component
)
Games.mxml (my component, trying to use e4x):
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.com/2006/mxml; xmlns:my=*
mx:Script
![CDATA[
private var _xlist:XMLList;
public function get xlist():XMLList {
return _xlist;
}
public function set xlist(x:XMLList):void {
_xlist = x;
trace(111: + _xlist.toString());
trace(222: + _xlist.game.toString());
list.dataProvider = x;
all.text = All games: + _xlist.game.length();
full.text = Full games: +
_xlist.game.(user.length() == 3).length();
vacant.text = Vacant games: +
_xlist.game.(user.length() 3).length();
}
private function gameLabel(item:Object):String {
return game: + it...@label;
}
]]
/mx:Script
mx:Label id=all text=All games/
mx:Label id=full text=Full games/
mx:Label id=vacant text=Vacant games/
mx:List id=list labelFunction=gameLabel/
/mx:VBox
MyTest.mxml:
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.com/2006/mxml; xmlns:my=*
mx:Script
![CDATA[
import mx.events.*;
private function changeXML1():void {
games = games
game label=1
user/
user/
user/
/game
game label=2
user/
user/
/game
game label=3
user/
user/
user/
/game
/games;
}
private function changeXML2():void {
games = games
game label=A
user/
user/
user/
/game
game label=B
user/
user/
/game
game label=C
/game
/games;
}
]]
/mx:Script
mx:XML id=games
games
game label=X
user/
user/
/game
game label=Y
user/
user/
/game
/games
/mx:XML
mx:Button label=Change XML 1 click=changeXML1()/
mx:Button label=Change XML 2 click=changeXML2()/
my:Games xlist={games.game}/
/mx:Application
It prints empty list for the
[Flashcoders] E4X question: counting number of subnodes
Hello, my server delivers XML data over socket, representing games, with up to 3 players in each. In my custom component I'd like to display a summary: total number of games, number of full games (3 players) number of vacant games (joinable, because less than 3 players). I've prepared a reduced test case demonstrating my problem: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); It prints wrong results for the 2 last calculations: All games: 3 Full games: 0 Vacant games: 7 And a warning: Warning: 1060: Migration issue: The method length is no longer supported. Use the length property of the argument instead.. Please advise me Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
Hi, I am not sure you can count the sub-nodes without having some sort of differentiator between parent nodes. You might have to loop through the list of games to find how many users are in each one as your tests for 2 3 are returning the total number of user nodes in the tree. You can test your e4x stuff quite nicely here: http://www.linkwerk.com/pub/javascript/e4x/e4x-tester/ Glen Alexander Farber wrote: Hello, my server delivers XML data over socket, representing games, with up to 3 players in each. In my custom component I'd like to display a summary: total number of games, number of full games (3 players) number of vacant games (joinable, because less than 3 players). I've prepared a reduced test case demonstrating my problem: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); It prints wrong results for the 2 last calculations: All games: 3 Full games: 0 Vacant games: 7 And a warning: Warning: 1060: Migration issue: The method length is no longer supported. Use the length property of the argument instead.. Please advise me Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
Yeah you should add attributes to your game nodes to seperate them: var games:XML = games game id=1 user/ user/ user/ /game game id=2 user/ user/ /game game id=3 user/ user/ /game /games; then you can use E4X to find the actually amount of users in each game: **Pseudo Code** games.game(@id == 1).user.length(); Nathan Mynarcik nat...@mynarcik.com 254.749.2525 www.mynarcik.com On Thu, Aug 19, 2010 at 1:18 PM, Glen Pike postmas...@glenpike.co.ukwrote: Hi, I am not sure you can count the sub-nodes without having some sort of differentiator between parent nodes. You might have to loop through the list of games to find how many users are in each one as your tests for 2 3 are returning the total number of user nodes in the tree. You can test your e4x stuff quite nicely here: http://www.linkwerk.com/pub/javascript/e4x/e4x-tester/ Glen Alexander Farber wrote: Hello, my server delivers XML data over socket, representing games, with up to 3 players in each. In my custom component I'd like to display a summary: total number of games, number of full games (3 players) number of vacant games (joinable, because less than 3 players). I've prepared a reduced test case demonstrating my problem: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); It prints wrong results for the 2 last calculations: All games: 3 Full games: 0 Vacant games: 7 And a warning: Warning: 1060: Migration issue: The method length is no longer supported. Use the length property of the argument instead.. Please advise me Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
Re: [Flashcoders] E4X question: counting number of subnodes
May be this is what you after? trace(Full games: + games.game.(user.length() == 3).length()); trace(Vacant games: + games.game.(user.length() 3).length()); // Trace Full games: 1 Vacant games: 2 Kenneth Kawamoto http://www.materiaprima.co.uk/ Alexander Farber wrote: Hello, my server delivers XML data over socket, representing games, with up to 3 players in each. In my custom component I'd like to display a summary: total number of games, number of full games (3 players) number of vacant games (joinable, because less than 3 players). I've prepared a reduced test case demonstrating my problem: var games:XML = games game user/ user/ user/ /game game user/ user/ /game game user/ user/ /game /games; trace(All games: + games.game.length()); trace(Full games: + games.game.user.(length() == 3).length()); trace(Vacant games: + games.game.user.(length() 3).length()); It prints wrong results for the 2 last calculations: All games: 3 Full games: 0 Vacant games: 7 And a warning: Warning: 1060: Migration issue: The method length is no longer supported. Use the length property of the argument instead.. Please advise me Alex ___ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
