On Friday, February 3, we posted a Friday Puzzle that shows a PowerShell function and a PowerShell class method that contain the same command sequence, including a statement with the Return keyword. The puzzle asks: What does the function return? What does the class method return? And, of course, we want to understand why. To […]
Category: Classes in PowerShell 5.0
Inheritance in PowerShell Classes
If you’re learning about classes in Windows PowerShell 5.0, one of the first new concepts that you’ll encounter is inheritance. When you create a class that is based on another class, your new subclass or child class automatically gets the inheritable members (e.g. properties and methods) of the parent class or base class. Inheritance is […]
Creating Objects in Windows PowerShell
Applies to: PowerShell 5.0.10240 I was recently in the beautiful city of Copenhagen, Denmark, where I was the guest of PSUG.DK, PowerShell User Group in Denmark. We met in the swanky Microsoft offices for a hands-on about classes in Windows PowerShell 5.0. Microsoft Offices, Copenhagen, Denmark. In the hands-on lab, we create a class, create […]
Why Do We Need Constructors?
While traveling after PowerShell Summit Europe in Stockholm, I was honored to be the guest of the Microsoft Technical User Group in Oslo, Norway (@MTUG_Norge). This well-established user group meets on the beautiful campus of the University of Oslo, a short light-rail ride from downtown Oslo. We got together for a hands-on lab on classes […]
Hidden … sort of: The Hidden Keyword in PowerShell Classes
The Hidden keyword hides properties and methods (and other members, like events) in a PowerShell class. When a member is hidden, you can still view and change it, but the Get-Member cmdlet doesn’t display it without the Force parameter and the hidden members are not available to auto-completion features, such as PrimalSense and IntelliSense. You […]
Enumerated Types in Windows PowerShell 5.0
Follow @juneb_get_help [Update: The original post referred to “enums” as “enumerators” when, in fact, they are “enumerated types.” By contrast, enumerators allow you to process items one at a time. Many thanks to Windows PowerShell MVP Dave Wyatt (@msh_Dave) for the correction.] Enums have always been a part of Windows PowerShell, because they’re an important part […]
Find variables with class
Follow @juneb_get_help I’ve been playing with the Windows PowerShell 5.0 preview and especially with its new class feature. After I create my class, I often create several instances of the class and experiment with them in my session. For example, I created a Wine class and then created several instances of my wine class. I […]
Beyond custom objects: Create a .NET class
In yesterday’s blog post, I used the Select-String cmdlet to capture the table of keywords and references from the about_language_keywords help topic and then used the new ConvertFrom-String cmdlet in the Windows PowerShell 5.0 preview to convert each row of the table into a custom object (PSCustomObject). The custom object worked quite well. I could search, sort, format, and […]
