Parameter validation is a crucial feature of advanced PowerShell functions that ensures your scripts handle data reliably and predictably. Mabotja described it as a method for enforcing rules on input ...

PowerShell How-To Getting Input into Your PowerShell Functions with Parameters Here's a quick walkthrough of how to build function parameters in reusable snippets. By Adam Bertram 04/07/2016 ...

With this knowledge of how PowerShell handles data coming from the pipeline, you can now build some powerful functions that can make not only your work easier, but also those who use your functions as ...

If your automated script takes action based on a value, it's critical to make sure the value is correct. Good thing PowerShell has ways to validate the values that are passed to a function.

How To Build a Better PowerShell Test-Connection Function with Proxy Commands It's easier to modify an existing cmdlet to your needs than writing one from scratch.