powershell compare two arrays, create third array with only nonmatching values

Question

Firstly the only thing I have available is powershell. I have figured out how to compare two arrays; however, I am having a bit if difficulty figuring out how to get the data back in the format I need.

$foo = @(100, 200 ,300 ,400 ,500 ,600 ,700 ,800 ,900 ,1000)
$bar = @(50, 100, 600 , 900)

Desired results would be an array with the following information

 50, 200, 300, 400, 500, 700, 800, 1000

Note that the like values

100, 600 , 900

are dropped and

which is in the second array is added to the output.

is this possible?

thanks

ravikanth · Accepted Answer · 2012-05-29 18:31:28Z

14

Compare-Object is your friend:

PS C:\Users> $foo = @(100, 200 ,300 ,400 ,500 ,600 ,700 ,800 ,900 ,1000)
PS C:\Users> $bar = @(50, 100, 600 , 900)
PS C:\Users> Compare-Object $foo $bar -PassThru
50
200
300
400
500
700
800
1000

answered May 29, 2012 at 18:31

ravikanth

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2 Comments

Radagast Over a year ago

Ha! I knew it had to be simple. Thank you so very much ravikanth

ravikanth Over a year ago

Welcome! PowerShell is simple! :)

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