1. What is Raku? 1.1 Perl 5, the Older Sister 1.2 Library Availability 1.3 Why Should I Use Raku? 2. Running Rakudo Raku 2.1 Installers 2.2 Docker 2.

3 Building from Source 2.4 Testing your Rakudo Star Installation 3. Formatting a Sudoku Puzzle 3.1 Making the Sudoku Playable 3.2 Shortcuts, Constants, and more Shortcuts 3.3 IO and other Tragedies 3.4 Get Creative! 4. Datetime Conversion for the Command Line 4.

1 Libraries To The Rescue 4.2 DateTime Formatting 4.3 Looking the Other Way 4.4 Dealing With Time 4.5 Tighten Your Seat Belt 4.6 MAIN magic 4.7 Automatic Tests 4.8 Summary 5.

Testing say() 5.1 Summary 6. Silent Cron, a Cron Wrapper 6.1 Running Commands Asynchronously 6.2 Implementing Timeouts 6.3 More on Promises 6.4 Possible Extensions 6.5 Refactoring and Automated Tests Refactoring Mocking and Testing Improving Reliability and Timing Installing a Module 6.

6 Summary 7. Stateful Silent Cron 7.1 Persistent Storage 7.2 Developing the Storage Backend 7.3 Using the Storage Backend 7.4 Room for Expansion 7.5 Summary 8. Review of the Raku Basics 8.

1 Variables and Scoping 8.2 Subroutines 8.3 Classes and Objects 8.4 Concurrency 8.5 Outlook 9. Parsing INI files using Regexes and Grammars 9.1 Regex Basics Character Classes Quantifiers Alternatives 9.2 Parsing the INI primitives 9.

3 Putting Things Together 9.4 Backtracking 9.5 Grammars 9.6 Extracting Data from the Match 9.7 Generating Good Error Messages Failure is Normal Detecting Harmful Failure Providing Context Shortcuts for Parsing Matching Pairs 9.8 Write Your Own Grammars 9.9 Summary 10. A File and Directory Usage Graph 10.

1 Reading File Sizes 10.2 Generating a Tree Map 10.3 Flame Graphs 10.4 Functional Refactorings 10.5 More Language Support for Functional Programming 10.6 More Improvements 10.7 Explore! 10.8 Summary 11.

A Unicode Search Tool 11.1 Code Points, Grapheme Clusters and Bytes 11.2 Numbers 11.3 Other Unicode Properties 11.4 Collation 11.5 Summary 12. Plotting Using Inline::Python and Matplotlib 13. What's Next?.