PSAddMember -- Extend all objects with an easier to use PSAddMember function

PSAddMember.psm1

Function PSAddMember() {
  $this = $args[0]

  switch($args.Count) {
    2 {
      ($args[1] -as [HashTable]) | %{ $_.GetEnumerator() } | %{ Add-Member -InputObject $this -Name $_.Name -value $_.Value -MemberType Noteproperty -Force -PassThru }
      break;
    }

    3 {
      Add-Member -InputObject $this -Name $args[1] -value $args[2] -MemberType Noteproperty -Force -PassThru
      break;
    }

    4 {
      Add-Member -InputObject $this -Name $args[1] -value $args[2] -MemberType $args[3] -Force -PassThru
      break;
    }
  }
<#
.SYNOPSIS
  Quickly adds a member property to object.  Once System.Object is extended with this method then extending objects is trivial

.EXAMPLE
    # Get-Process | %{ $_.PSAddMember("Author", "Me").PSAddMember("Thread-Count", { $this.Threads.Count }, "ScriptProperty") } | Select Name,Author,Thread-Count
  

    Description
    -----------
    Quickly add note properties or custom properties
    You can chain multiple calls together and continue passing the objects through the pipeline


.EXAMPLE
    # Get-Process | %{ $_.PSAddMember(@{Author=Me;Thread-Count=($_.Threads.Count)}) } | Select Name,Author,Thread-Count
  

    Description
    -----------
    Use a hashtable to add a bunch of properties at once.
    Note that any expressions for the property value are executed when added
    and the resulting value of the xpression is stored in a NoteProperty value.
#>
}

# Extend every object in the powershell system with a PSAddMember function
# PS 3.0 Only, < 3.0 requires using an xml type file and loading that
Update-TypeData -TypeName System.Object -MemberName PSAddMember -MemberType ScriptMethod -Value { PSAddMember $this @args } -Force