Introduction to PowerShell

This project will guide the reader from the beginnings of learning about PowerShell and its standards, to learning about programming fundamentals, OOP, functional programming, and finally, organizing code into a module.
Introduction to PowerShell
In: PowerShell 101, Code

1) Series Introduction

The opener to the series, PowerShell as Your First Programming Language, seeks to explain why PowerShell makes an excellent foray into the world of programming, due to its immediate availability on Windows operating systems and cross-compatibility with Linux and Mac OS.

PowerShell as Your First Programming Language
In this post, I discuss why PowerShell makes a great first programming language
This article isn't just for those getting into programming or picking up their first language. It is also a general introduction to the programming language known as PowerShell.

2) Programming Fundamentals

Now that you've been introduced to PowerShell, its standards, basic commands, and getting help, it's time to explore the basics of programming with PowerShell. These are the same principles you'd learn with any other language:

  • Data types
  • Control flow
  • Loops
  • And, much more
Programming Fundamentals with PowerShell
In this post, I go over the fundamentals of programming using PowerShell and demonstrate why it’s a great way to learn to code
The fundamentals you'll learn here are the same fundamentals you'd learn with any other programming languages. Learn once here, and the concepts repeat elsewhere with slight variations in syntax.

3) Object-Oriented Programming

Object-oriented programming (OOP) has a tendency to bewilder, but as with all things, the path to understanding is just a matter of time + effort. You must understand that OOP is simply a way to organize (encapsulate) data into units.

In this lesson, you'll see how to build a template class, and subsequently derive an object from this class.

Intro to Object-Oriented Programming with PowerShell
In this post, I go over the fundamentals of object-oriented programming and some simple ways to interact with objects in PowerShell
Because PowerShell is an OOP language, most of the fundamentals you learn here will carry over to other languages like Python, Ruby, JavaScript, etc.

4) Functional Programming

Don't Repeat Yourself (DRY) — DRY code is good code. Repeating the same code in different places causes problems. What if you change the repeated code block in one place, but forget to update it in another? This causes things to break and introduces bugs.

Functional Programming in PowerShell
In this post, we will take a look at the concept of functional programming and how to write a basic function in PowerShell.
If you find yourself repeating the same code in multiple places, this is the time to create a function. A function is a block of code that helps us repeat a process with consistent inputs and outputs, much like you'd use a specific tool for specific purposes when working with your hands.

5) Creating a PowerShell Module

At some point after writing a number of scripts to automate tasks and workflows, your code files and other dependencies might grow to the extent that you want to organize them into a single package.

Creating a PowerShell Module
In this post, I walk you through the process I follow when creating a PowerShell module and the reasoning behind doing so.
Much like Python modules are used to organize libraries, code, variables, functions, classes, and more into packages, PowerShell modules serve this exact purpose.
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