Powershell update value in Array

Question

I'm suspect I am going about this the wrong way and need to switch to a hash table but is it possible to update a specific value in an Array? The script retrieves the cluster nodes and stores the data in a array, then proceeds to reboot each one, once rebooted I want to update the reboot 'column' value in the array to 1.

$Array=@()
$Cluster = Get-ClusterNode
foreach ($Node in $Cluster)
    {                 
        $item = New-Object PSObject
        $item | Add-Member -type NoteProperty -Name 'Node' -Value $Node.Name
        $item | Add-Member -type NoteProperty -Name 'State' -Value $Node.State
        $item | Add-Member -type NoteProperty -Name 'Rebooted' -Value "0"
        $Array += $item
    }
foreach ($row in $Array | Where { $Array.Rebooted -eq "0" })
    {
    Reboot-Function -Node $row.Node
    $Array.Rebooted += 1 | Where-Object {$Array.Node -eq $row.Node}
    }
$Array

You already have a reference to the current item in the array, in the form of $row. Simply do $row.Rebooted = 1 instead of $Array.Rebooted += 1 | Where-Object {$Array.Node -eq $row.Node} — Mathias R. Jessen
– Mathias R. Jessen, Commented Mar 24, 2022 at 16:20
In addition, Where { $Array.Rebooted -eq "0" } doesn't seem to be needed at all, since -Name 'Rebooted' -Value "0". — Santiago Squarzon
– Santiago Squarzon, Commented Mar 24, 2022 at 16:24

Mathias R. Jessen · Accepted Answer · 2022-03-24 16:24:55Z

1

You need to rewrite the Where-Object statement in the second loop slightly (use $_ to refer to the current pipeline object), and then simply update the current object via the $row variable inside the loop body:

foreach ($row in $Array | Where { $_.Rebooted -eq "0" })
{
    Reboot-Function -Node $row.Node
    $row.Rebooted = '1'
}

answered Mar 24, 2022 at 16:24

Mathias R. Jessen

178k13 gold badges175 silver badges234 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Powershell update value in Array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related