[GitHub] [royale-compiler] yishayw opened a new issue #139: ArrayCollection - comparison of item to null emits setProperty()

[GitBox <gi...@apache.org>]

yishayw opened a new issue #139: ArrayCollection - comparison of item to null emits setProperty()
URL: https://github.com/apache/royale-compiler/issues/139
 
 
   Test case:
   
   ```
   <?xml version="1.0" encoding="utf-8"?>
   <mx:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                      xmlns:mx="library://ns.apache.org/royale/mx"
   		   applicationComplete="init()"
                      width="600" height="400" >
   
   			<fx:Script>
   				<![CDATA[
   					import mx.collections.ArrayCollection;
   
   					private function init():void
   					{
   						var myDp:ArrayCollection = new ArrayCollection();
   						myDp.addItem("hello1");
   						if (myDp[0] != null) // bad line
   						{
   							trace("ok...")
   						} else
   						{
   							trace("not ok")
   						}
   					}
   
   				]]>
   			</fx:Script>
   </mx:Application>
   
   ```
   The line commented with //bad transpiles to:
   
   `  if (myDp.setProperty(0, null)) {`
   
   which yields a 'not ok' result.

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[GitHub] [royale-compiler] yishayw commented on issue #139: ArrayCollection - comparison of item to null emits setProperty()

[GitBox <gi...@apache.org>]

yishayw commented on issue #139: ArrayCollection - comparison of item to null emits setProperty()
URL: https://github.com/apache/royale-compiler/issues/139#issuecomment-605456333
 
 
   Workaround is to replace //bad line with
   
   ```
   						var item1:Object = myDp[0];
   						if (item1 != null)
   
   ```

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