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Integrated Security = true;
Integrated Security = SSPI;

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public sealed class Singleton
{
    // Because Singleton's constructor is private, we must explicitly
    // give the Lazy a delegate for creating the Singleton.
    static readonly Lazy instanceHolder =
        new Lazy(() => new Singleton());

    Singleton()
    {
        // Explicit private constructor to prevent default public constructor.

aershov24

ping google.com &

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class Contact
{
   # Optionally, add attributes to prevent invalid values
   [ValidateNotNullOrEmpty()][string]$First
   [ValidateNotNullOrEmpty()][string]$Last
   [ValidateNotNullOrEmpty()][string]$Phone

   # optionally, have a constructor to 
   # force properties to be set:
   Contact($First, $Last, $Phone) {

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$URL_Format_Error = New-Object System.FormatException "..."
Throw $URL_Format_Error

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Start-Process -NoNewWindow ping google.com

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$URL_Format_Error = [string]"..."
Write-Error $URL_Format_Error
return

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[PSCustomObject]@{
   PSTypeName = "Contact"
   First = $First
   Last = $Last
   Phone = $Phone
}

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1,2,3 | %{ write-host $_ } 

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add-type @"
public struct contact {
  public string First;
  public string Last;
  public string Phone;
}
"@