3) write-host's positional parameter expects a string, so the Powershell runtime is casting the params array to a string under the hood. The & operator can handle arrays directly, so no casting ...

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 ...

Anatomy of a PowerShell Parameter, Part 2: Validation Continuing the look into parameters, this part will focus specifically on parameter sets and the different ways to validate them.

Yes, you can save all the commands you run and their output to a file in PowerShell — Here's how to do it on Windows 10.