How to test for $null array in PowerShell

Question

I\'m using an array variable in PowerShell 2.0. If it does not have a value, it will be $null, which I can test for successfully:

PS C:\\> [array]$foo =          


        

Answer 1

You can reorder the operands:

$null -eq $foo

Note that -eq in PowerShell is not an equivalence relation.