More PowerShell Goodness...
If you love reading about improving performance in PowerShell (which admittedly isn't its strong suit) then you'll love these two posts. First one:
sets the stage. I talk about creating an object where the properties can update dynamically based on values in other properties of the object. It's THIS close to class, without the persistence or reusuability. And then with a little playing we discovered how cool this technique could be: