Creating Objects With Methods in PowerShell - Part 3

gistfile1.txt

# Code from my blog entry at http://betterlivingthroughcode.blogspot.com/2014/02/creating-objects-with-methods-in_27.html

$myObject -is [MyType]

$myObject.PSObject.TypeNames.Insert(0, "MyType")

$myObject.PSObject.TypeNames[0] -eq "MyType"

$myObject | Add-Member -MemberType ScriptMethod -Name MyMethod -Value { param([string]$p1, [int]$p2) $p1 * $p2 }
$myObject | Get-Member

$code = @'
 public class MyClass {
 public string MyProperty1 = "Default";
 public int MyProperty2 = 23;
  
 public string MyMethod(string P1, int P2) {
  string results = "";
  for (int i = 1; i <= P2; i++) {
   results += P1;
  }
  return results;
 }
}
'@
 
Add-Type -TypeDefinition $code -Language CSharp
$myObject = New-Object -TypeName MyClass
$myObject | Get-Member

$myObject -is [MyClass]

Function NewAddressUsingAddMember() {
    $Address = [pscustomobject]@{
        Street1 = "123 Anywhere Lane";
        Street2 = "Apartment 42";
        City = "Fnord";
        State = "AA";
        Zip = "55555"
    }

    $Address | Add-Member -MemberType ScriptMethod -Name WriteAddress -Value { "$($this.Street1)`n$($this.Street2)`n$($this.City), $($this.State)  $($this.Zip)" }

    $Address
}

Function NewAddressUsingNewModule() {
    $Address = New-Module -ScriptBlock {
        [string]$Street1 = "123 Anywhere Lane"
        [string]$Street2 = "Apartment 42"
        [string]$City = "Fnord"
        [string]$State = "AA"
        [string]$Zip = "55555"

        Function WriteAddress() { "$($this.Street1)`n$($this.Street2)`n$($this.City), $($this.State)  $($this.Zip)" } 

        Export-ModuleMember -Function * -Variable *
    } -AsCustomObject

    $Address
}

Function AddAddressType() {
    $code = @"
    public class Address {
        public string Street1 = "123 Anywhere Lane";
        public string Street2 = "Apartment 42";
        public string City = "Fnord";
        public string State = "AA";
        public string Zip = "55555";
        public string WriteAddress() {
            return string.Format("{0}\n{1}\n{2}, {3}  {4}", Street1, Street2, City, State, Zip);
        }
    }
"@
    
    Add-Type -TypeDefinition $code -Language CSharp
}

Function NewAddressUsingAddType() {
    AddAddressType
    New-Object -TypeName Address
}

Function MeasureIt($CommandName, $Count, $ScriptBlock) {
    $ms = Measure-Command -Expression $ScriptBlock | Select-Object -ExpandProperty TotalMilliseconds
    "Using $CommandName $Count times took $ms milliseconds"
}

# Measure each once
MeasureIt "Add-Member" 1 { NewAddressUsingAddMember }
MeasureIt "New-Module" 1 { NewAddressUsingAddMember }
MeasureIt "Add-Type" 1 { NewAddressUsingAddType }


# Measure each method 1000 times
MeasureIt "Add-Member" 10000 { 1..10000 | % { NewAddressUsingAddMember } }
MeasureIt "New-Module" 10000 { 1..10000 | % { NewAddressUsingAddMember } }
MeasureIt "Add-Type" 10000 { 1..10000 | % { NewAddressUsingAddType } }

Function NewAddressUsingAddTypeWithoutInitializing() {
    New-Object -TypeName Address
}

# Measure each method 1000 times
MeasureIt "Add-Member" 1000 { 1..1000 | % { NewAddressUsingAddMember } }
MeasureIt "New-Module" 1000 { 1..1000 | % { NewAddressUsingAddMember } }
MeasureIt "Add-Type" 1000 { 1..1000 | % { NewAddressUsingAddType } }
MeasureIt "Add-Type" 1000 { 1..1000 | % -Begin { AddAddressType } -Process { NewAddressUsingAddTypeWithoutInitializing } }