A group in a regular expression serves a number of different possible purposes:
- To denote repetition (of more than a single character)
- To restrict alternation to a part of the regular expression
- To capture a value
- Title Page
- Copyright and Credits
- About Packt
- Contributors
- Preface
- Section 1: Exploring PowerShell Fundamentals
- Introduction to PowerShell
- Modules and Snap-ins
- Introducing modules
- PowerShell Core and the WindowsCompatibility module
- Introducing snap-ins
- Summary
- Working with Objects in PowerShell
- Operators
- Section 2: Working with Data
- Variables, Arrays, and Hashtables
- Naming and creating variables
- Variable commands
- Variable provider
- Variable scope
- Type and type conversion
- Objects assigned to variables
- Arrays
- Hashtables
- Lists, dictionaries, queues, and stacks
- Summary
- Branching and Looping
- Working with .NET
- Strings, Numbers, and Dates
- Regular Expressions
- Files, Folders, and the Registry
- Windows Management Instrumentation
- HTML, XML, and JSON
- Web Requests and Web Services
- Section 3: Automating with PowerShell
- Remoting and Remote Management
- Asynchronous Processing
- Working with jobs
- Reacting to events
- Using Runspaces and Runspace pools
- Creating a PowerShell instance
- The Invoke and BeginInvoke methods
- The EndInvoke method and the PSDataCollection object
- Running multiple instances
- Using the RunspacePool object
- About the InitialSessionState object
- Using the InitialSessionState and RunspacePool objects
- Using Runspace-synchronized objects
- Summary
- Section 4: Extending PowerShell
- Scripts, Functions, and Filters
- Parameters, Validation, and Dynamic Parameters
- Classes and Enumerations
- Building Modules
- Testing
- Error Handling
- Other Books You May Enjoy
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