Demonstrates assigning object collection with Array addition versus Direct Assignment

AssignmentComparison.ps1

$blah = get-childitem -Path c:\temp -Directory 

$AddedTicks = Measure-Command -Expression {
  $AddedToArray = @()
  foreach ($b in $blah) {
    $myOBJ = New-Object System.Object
    $myOBJ | Add-Member -Type NoteProperty -Name IsBlah -Value $b.BaseName
    $AddedToArray += $myOBJ
  }
} | Select-Object Ticks

# Cleanup
Remove-Variable colArray -Force -ErrorAction SilentlyContinue

$AssignedTicks = Measure-Command -Expression {
  $AssignedWithForEach = foreach ($b in $blah) {
    $myOBJ = New-Object System.Object
    $myOBJ | Add-Member -Type NoteProperty -Name IsBlah -Value $b.BaseName
    $myOBJ
  }
} | Select-Object Ticks

"Adding to array executed in $($AddedTicks.Ticks) ticks and produced a $($AddedToArray.GetType()) with $($AddedToArray.count) elements."
"Assigning via ForEach executed in $($AssignedTicks.Ticks) ticks and produced a $($AssignedWithForEach.GetType()) with $($AssignedWithForEach.count) elements."