Can I write a class using powershell?

Question

I\'m still learning powershell, and so far I haven\'t found an answer on this website, despite a few searches. With Powershell being built on top of the .NET framework, can

Answer 1

You can use the class keyword that was introduced in PowerShell 5.0

Here is an example by Trevor Sullivan. (Archived here.)

##################################################
####### WMF 5.0 November 2014 Preview ###########
##################################################
class Beer {
    # Property: Holds the current size of the beer.
    [Uint32] $Size;
    # Property: Holds the name of the beer's owner.
    [String] $Name;

    # Constructor: Creates a new Beer object, with the specified
    #              size and name / owner.
    Beer([UInt32] $NewSize, [String] $NewName) {
        # Set the Beer size
        $this.Size = $NewSize;
        # Set the Beer name
        $this.Name = $NewName;
    }

    # Method: Drink the specified amount of beer.
    # Parameter: $Amount = The amount of beer to drink, as an 
    #            unsigned 32-bit integer.
    [void] Drink([UInt32] $Amount) {
        try {
            $this.Size = $this.Size - $Amount;
        }
        catch {
            Write-Warning -Message 'You tried to drink more beer than was available!';
        }
    }

    # Method: BreakGlass resets the beer size to 0.
    [void] BreakGlass() {
        Write-Warning -Message 'The beer glass has been broken. Resetting size to 0.';
        $this.Size = 0;
    }
}

This works on Windows 10 Pro.

Test drive it like this:

# Create a new 33 centilitre beer, named 'Chimay'
$chimay = [Beer]::new(33, 'Chimay');

$chimay.Drink(10)
$chimay.Drink(10)

# Need more beer!
$chimay.Drink(200)

$chimay.BreakGlass()