May 2024
Intermediate to advanced
826 pages
18h 13m
English
Content preview from Mastering PowerShell Scripting - Fifth Edition
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18
Parameters, Validation, and Dynamic Parameters
Parameters are used in PowerShell to accept arguments or user input for a command. Almost all commands accept parameters; there are only a few exceptions in the form of utility functions like those to change drive, such as the function c:.
PowerShell has an extensive parameter handling and validation system that can be used in scripts and functions. The system allows a developer to make parameters mandatory; to define what, if any, positional binding is allowed; to fill parameters from the pipeline; to describe different parameter sets; and to validate the values passed to a parameter. The wealth of options available makes parameter handling an incredibly involved subject.
This chapter explores ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.