PowerShell Enum for Parameter Validation
An Enum type is a data type that enables a variable to be a set of predefined constants. The variable must be equal to one of the values that have been predefined for it. PowerShell Enum’s can be more descriptive rather using just a number.
Enums are used to declare an enumeration, a distinct type that consists of a set of named constants called the enumerator list, like an example in below Animation –
But, the Powershell Tip I learned today is that this could be used even for Parameter Validation inside a Function. To restrict the input to a list of predefined enumerations. like in below example.
If you’ll try giving a Value outside the defined it will give you errors.
Useful – Right? 🙂
My new book : PowerShell Scripting Guide to Python
This PowerShell Scripting guide to Python is designed to make readers familiar with syntax, semantics and core concepts of Python language, in an approach that readers can totally relate with the concepts of PowerShell already in their arsenal, to learn Python fast and effectively, such that it sticks with readers for longer time.
“Use what you know to learn what you don’t. ” also known as Associative learning.
Book follows a comparative method to jump start readers journey in Python, but who is the target audience? and who should read this book –
- Any System Administrator who want to step into Development or Programming roles, and even if you don’t want to be a developer, knowledge of another scripting language will make your skill set more robust.
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Python is one of the top programming languages and in fast changing IT scenarios to DevOps and Cloud to the future – Data Science, Artificial Intelligence (AI) and Machine Learning Python is a must know.
But this PowerShell Scripting guide to Python would be very helpful for you if you already have some knowledge of PowerShell
NOTE! This is a Leanpub “Agile-published” book. That means the book is currently unfinished and in-progress. As I continue to complete the chapters, we will re-publish the book with the new and updated content. Readers will receive an email once a new version is published!
While the book is in progress, please review it and send any feedback or error corrections at [email protected]