Proper way to create pscustomobject to add to array - arrays

Question

What is the proper way to create / clear / initialize a object inside a for loop using the following method/syntax? There is a performance increases using this method.
$objComputer = [pscustomobject] #{}
I noticed if one of the systems does not exist in AD and returns an error or null the information from the previous entry/object is used in the array. For example Computer-03 is valid but BLAH (which is not) pulls from the previous entry of Computer-03.
function Get-ADComputers ($NameList) {
$arrayComputer = #();
foreach ($line in $NameList.Split("`r`n") | ? { $_ }) {
$PCName = $line.Trim()
$Computer = (Get-ADComputer -Identity $PCName -Properties *)
$objComputer = [pscustomobject] #{
Computer = $PCName
Active = $Computer.Enabled
Date = $Computer.PasswordLastSet
DaysOld = (Get-DaysOld $Computer.PasswordLastSet)
OU = $Computer.DistinguishedName
}
write-host $objComputer
$arrayComputer += $objComputer
$objComputer = $null;
} return $arrayComputer
}
RESULTS
Computer Active Date DaysOld
Computer-01 TRUE 4/12/2015 8:16 -29
Computer-02 TRUE 5/4/2015 7:11 -7
Computer-03 TRUE 4/20/2015 9:01 -21
BLAH TRUE 4/20/2015 9:01 -21
Computer-03 TRUE 4/6/2015 8:14 -35
Computer-04 TRUE 5/9/2015 17:17 -1
Computer-05 TRUE 4/17/2015 12:04 -24
Thank you for your help! :)
EDIT EXAMPLE WITH TRY CATCH:
function Get-ADComputers ($NameList) {
$arrayComputer = #();
foreach ($line in $NameList.Split("`r`n") | ? { $_ }) {
$Computer = $null
$PCName = $line.Trim()
try {
$Computer = (Get-ADComputer -Identity $PCName -Properties *)
$objComputer = [pscustomobject] #{
Computer = $PCName
Active = $Computer.Enabled
Date = $Computer.PasswordLastSet
DaysOld = (Get-DaysOld $Computer.PasswordLastSet)
OU = $Computer.DistinguishedName
}
} catch {
$objComputer = [pscustomobject] #{
Computer = "$PCName"
Active = "Missing"
Date = "N/A"
DaysOld = "N/A"
OU = "N/A"
}
}
write-host $objComputer
$arrayComputer += $objComputer
$objComputer = $null;
} return $arrayComputer
}

Answer 1

If the call to Get-ADComputer fails, $Computer is not cleared out. You'll need to handle the error in one way or another. A simple solution:
$Computer = $null
$Computer = (Get-ADComputer -Identity $PCName -Properties *)
if(!$Computer) { #handle a missing computer
$objComputer = [pscustomobject] #{
Computer = "Computer not found"
Active = "FALSE"
Date = "N/A"
DaysOld = "N/A"
OU = "N/A"
}
}
You can also use a try/catch block. If you don't care all that much, you can use -ErrorAction SilentlyContinue.