Measure-TypeAccelerator.ps1

<#
.SYNOPSIS
    This function 'measures' (counts) the number of 
    Type Accelerators on your system.
.DESCRIPTION
    This function counts the number of type accelerators are 
    on your systems and returns that number.
.NOTES
    File Name  : Measure-TypeAccelerator.ps1
    Author     : Thomas Lee - tfl@psp.co.uk
    Requires   : Version 3
.LINK
    Script Repository
      http://www.pshscripts.blogspot.com 
.Example
    Psh[C:\foo]> Measure-TypeAccelerator.ps1
    84
.Example
    Psh[C:\foo]> Count-TypeAccelerator.ps1
    84

#>

Function Measure-TypeAccelerator {
# Define parameters and enable advanced functions
# NB no parameters!
[cmdletbinding()]
Param ()

#   Start of function
Write-Verbose 'Getting acount of all Type Accelerators'
$Count = (([PSObject].Assembly.GetType('System.Management.Automation.TypeAccelerators')::Get).GetEnumerator() | 
   Measure).count 
Write-Verbose "$Count Type Accelerators found on $(hostname)"
Return $count
}

# Set an alias
Set-Alias CTA Measure-TypeAccelerator
Set-Alias MTA Measure-TypeAccelerator

Remove-TypeAccelerator

<#
.SYNOPSIS
    This script removes a type accelerator from your system
.DESCRIPTION
    This script removes a NEW TA from your system.
.NOTES
    File Name  : Remove-TypeAccelerator.ps1
    Author     : Thomas Lee - tfl@psp.co.uk
    Requires   : Version 3
.LINK
    Script Repository
      http://www.pshscripts.blogspot.com 
.Example
    Psh[C:\foo]> Remove-TypeAccelerator tfl
    Alias [tfl] removed
#>

###
#   Start of script
###

Function Remove-TypeAccelerator {
[cmdletbinding()]
param (
[Parameter(Mandatory=$true)] 
[string] $alias
)

# Start of function
Try
  {
   [void] ([PSObject].Assembly.GetType("System.Management.Automation.TypeAccelerators")::remove($alias))
  }
Catch
   {
    Write-Error "Failed to remove alias [$alias]"
    return
   }

# Return
"Alias [$alias] removed"
}

Set-Alias rta Remove-TypeAccelerator

# Test this out
Remove-TypeAccelerator 'foo3'

New-TypeAccelerator.ps1

<#
.SYNOPSIS
    This script creates a new type accelerator on your system
.DESCRIPTION
    This script adds a NEW TA to your system.
.NOTES
    File Name  : New-TypeAccelerator.ps1
    Author     : Thomas Lee - tfl@psp.co.uk
    Requires   : Version 3
.LINK
    Script Repository
      http://www.pshscripts.blogspot.com 
.Example
    Psh[C:\foo]> New-TypeAccelerator tfl system.int32
    Alias [tfl] added for type [system.int32]
#>

###
#   Start of script
###

function New-TypeAccelerator {
[cmdletbinding()]
param (
[Parameter(Mandatory=$true)] 
[string] $alias,
 
[Parameter(Mandatory=$true)] 
[string] $type
)

# Start of function
Try
  {
    ([PSObject].Assembly.GetType("System.Management.Automation.TypeAccelerators")::add($alias,$type))
  }
Catch
   {
    Write-Error "Failed to add alias [$alias] to type [$type]"
    return
   }

# Return
"Alias [$alias] added for type [$Type]"
}

Set-Alias nta New-TypeAccelerator

# Test this out
New-TypeAccelerator

Get-TypeAccelerator.ps1

<#
.SYNOPSIS
    This script defines a function to get a list of
    Type Accelerators in PowerShell and displays them nicely
.DESCRIPTION
    This script gets the details of type accelerators in the system. 
    Earlier versions of this script uses a different class, which
    has been taken private and is not available any more. This 
    script also creates an alias for the function. GTA takes a
    string parameter which is used as a regular expression to 
    find a subset of type accelerators.
.NOTES
    Additional Notes, eg
    File Name  : Get-TypeAccelerator.ps1
    Author     : Thomas Lee - tfl@psp.co.uk
    Requires   : Version 3
.LINK
    Original article:
      http://www.nivot.org/2008/12/25/ListOfTypeAcceleratorsForPowerShellCTP3.aspx
    Script Repository
      http://www.pshscripts.blogspot.com
.Example
    Psh[C:\foo]>Get-TypAccelerator int
     Name   Type                      
    ----   ----                      
    bigint System.Numerics.BigInteger
    int    System.Int32              
    int16  System.Int16              
    int32  System.Int32              
    int64  System.Int64              
    uint16 System.UInt16             
    uint32 System.UInt32             
    uint64 System.UInt64       

.Example
    Psh[C:\foo]>Get-TypAccelerator 's$'
    Name              Type                                                   
    ----              ----                                                   
    Alias             System.Management.Automation.AliasAttribute            
    cimclass          Microsoft.Management.Infrastructure.CimClass           
    ipaddress         System.Net.IPAddress                                   
    mailaddress       System.Net.Mail.MailAddress                            
    SupportsWildcards System.Management.Automation.SupportsWildcardsAttribute
    wmiclass          System.Management.ManagementClass    
#>

###
#   Start of script
###
Function Get-TypeAccelerator {
[Cmdletbinding()]
param (
  [string] $accelerator
)

([PSObject].Assembly.GetType("System.Management.Automation.TypeAccelerators")::Get).getenumerator() |
  Select-object @{Name="Name"; expression={$_.key}},  
                @{name="Type"; expression={$_.value}} | 
  where name -match $accelerator | Sort name | Format-Table -Autosize
}
Set-Alias gta Get-TypAccelerator

# Test script
Get-TypAccelerator  int  # anything with int 
Get-TypeAccelerator 's$' # ends in s