functions/Get-PSUnique.ps1
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Function Get-PSUnique { [cmdletbinding()] [alias('gpsu')] [OutputType('object')] Param( [Parameter(Position = 0, Mandatory, ValueFromPipeline)] [ValidateNotNullOrEmpty()] [object]$InputObject, [string[]]$Property ) Begin { Write-Verbose "[$((Get-Date).TimeOfDay) BEGIN ] Starting $($MyInvocation.MyCommand)" Write-Debug "[$((Get-Date).TimeOfDay) BEGIN ] Initializing list" $UniqueList = [System.Collections.Generic.list[object]]::new() } #begin Process { if ($Property) { foreach ($item in $InputObject) { $props = $item.PSObject.Properties.where{ $_.name -in $Property } if (-not $props) { continue } if (-not $UniqueList.Exists({ -not (Compare-Object $args[0].PSObject.properties.where{ $_.name -in $Property }.value $props.value) })) { $UniqueList.add($item) } } } else { foreach ($item in $InputObject) { Try { if ($UniqueList.Exists( { -Not ( Compare-Object -ReferenceObject $args[0].PSObject.properties.value -DifferenceObject $item.PSObject.Properties.value )})) { Write-Debug "[$((Get-Date).TimeOfDay) PROCESS] Skipping: $($item |Out-String)" } else { Write-Debug "[$((Get-Date).TimeOfDay) PROCESS] Adding as unique: $($item | Out-String)" $UniqueList.add($item) } } Catch { Write-Warning "The input object can't be compared based on the number of properties. Try again using the Property parameter." } } } <# foreach ($item in $InputObject) { if ($UniqueList.Exists( { -not(Compare-Object $args[0].PSObject.properties.value $item.PSObject.Properties.value) })) { Write-Debug "[$((Get-Date).TimeOfDay) PROCESS] Skipping: $($item |Out-String)" } else { Write-Debug "[$((Get-Date).TimeOfDay) PROCESS] Adding as unique: $($item | Out-String)" $UniqueList.add($item) } } #> } #process End { Write-Verbose "[$((Get-Date).TimeOfDay) END ] Found $($UniqueList.count) unique objects" Write-Debug "[$((Get-Date).TimeOfDay) END ] Writing results to the pipeline" $UniqueList Write-Verbose "[$((Get-Date).TimeOfDay) END ] Ending $($MyInvocation.MyCommand)" } #end } |