topic Re: I don't understand this: map.lods = tiledLayer.tileInfo.lods; in ArcGIS API for Flex Questions

I don't understand this: map.lods = tiledLayer.tileInfo.lods;

LeiZhou — Tue, 23 Nov 2010 18:29:54 GMT

I don't understand the last sentense in the following flex API: map.lods = tiledLayer.tileInfo.lods;
lods is a variable? tileInfo is a property of the object tileLayer, right? Then how come a property with a ".lod"? What does it mean? A property itself should be a variable, I don't understand why it can be followed by another variable ".lod"? Thanks a lot!

*************************Flex API ****************************
private function layerShowHandler(event:FlexEvent):void

{
// update the LODs/zoomslider to use/show the levels for the selected base map

   var tiledLayer:TiledMapServiceLayer = event.target as TiledMapServiceLayer;
               map.lods = tiledLayer.tileInfo.lods;
          }

Re: I don't understand this: map.lods = tiledLayer.tileInfo.lods;

LeiZhou — Tue, 23 Nov 2010 18:42:31 GMT

Ok, I get it. tileInfo is an object of the class TileInfo, so lods is its property.

But I am confused about the following one:

var tiledLayer:TiledMapServiceLayer = event.target as TiledMapServiceLayer;

event.target as TileMapServiceLayer ??? Is this a programming language?

Re: I don't understand this: map.lods = tiledLayer.tileInfo.lods;

DasaPaddock — Tue, 23 Nov 2010 18:56:32 GMT

"as" is a special operator in the ActionScript language.

See:
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/operators.html#as
http://help.adobe.com/en_US/as3/learn/index.html