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search an array

Posted on 2013-01-21
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Last Modified: 2013-04-11
Hi there, can't seem to find exactly what I'm looking for to search a array and produce the results I need. Let's say I have an array that that has the following.

User            Number            Color
Bill            1            Blue
Scott            2            Yellow
Jill            3            Green
Bob            1            Purple


I know if a person has Number '1' color should be 'Blue', and '2' should be yellow, and '3' should be green. What I want to find are the elements that aren't matching what I expect to see. So I need to search the array above and I would expect to see Bob, 1, purple.

I know I could create a foreach loop with some else and elseif statements, but is there a simpler way I could accomplish the same by piping the array through some search filter?

Thanks in advance for any suggestions.
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Question by:Wylz
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4 Comments
 
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Expert Comment

by:coraxal
ID: 38804268
How are you building your array? (i.e. result of importing TXT/CSV file, etc.)
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Author Comment

by:Wylz
ID: 38804299
Hi coraxal, I am building the array by importing a csv.
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Accepted Solution

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coraxal earned 400 total points
ID: 38804348
Ok..a couple of similar options; one using if statements and the other using the where-object cmdlet. I think regardless of the approach you still have to check your rules (1=blue, etc..) so there's no escaping that..

$myarray = Import-Csv C:\scripts\colors.csv

$output = @()

$myarray | % { 

	If (( $_.Number -eq "1" ) -and ( $_.Color -ne "Blue" )){ $output += $_ }
	If (( $_.Number -eq "2" ) -and ( $_.Color -ne "Yellow" )){ $output += $_ }
	If (( $_.Number -eq "3" ) -and ( $_.Color -ne "Green" )){ $output += $_ }
	
}	

if($output -ne $null){

	Write-Output "Non-matching records found"
	$output
	
}else{

	Write-Output "All records match"
	}

Open in new window


$myarray = Import-Csv C:\scripts\colors.csv

$output = @()

$output = $myarray | ? {(( $_.Number -eq "1" ) -and ( $_.Color -ne "Blue" )) -or (( $_.Number -eq "2" ) -and ( $_.Color -ne "Yellow" )) -or (( $_.Number -eq "3" ) -and ( $_.Color -ne "Green" ))}

if($output -ne $null){

	Write-Output "Non-matching records found"
	$output
	
}else{

	Write-Output "All records match"
	}

Open in new window

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Author Closing Comment

by:Wylz
ID: 39071493
ok, great! thanks, Sorry for the late response. Just picking this side project up gain, but thank you.
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