IN operator differences in FlashPlayer 10.1 causes Advanced Data Grid multiple selection bug

One of the more subtle changes in FlashPlayer 10 vs FlashPlayer 10.1 is that the behavior of the IN operator has changed. The IN operator when used to loop over the properties of an object will return it's keys in a different order each time you run a program.


Flex Datagrid Visibility Bug

Run into a nasty little bug with Flex datagrids the other, under some situations Datagrid columns with their visibility set to false will be displayed!

Here's a workaround.