Windows PowerShell 3.0 First Steps

Chapter 12. Working with functions

• Understanding functions

• Using multiple input parameters

• Using functions to encapsulate business logic

• Using functions to provide ease of modification

There are clear-cut guidelines that you can use to design script. You can use these guidelines to ensure that scripts are easy to understand, easy to maintain, and easy to troubleshoot. In this chapter, we examine the reasons for scripting guidelines and provide examples of both good code and bad code design.

Understanding functions

In Windows PowerShell, functions have moved to the forefront as the primary programming element used when writing Windows PowerShell scripts. This is not necessarily due to improvements in functions per se, but rather a combination of factors ...