Raku Language Documentation

Tutorials, general reference, migration guides and meta pages for the Raku language.

At the beginning

Brief introduction Using Raku official documentation
Raku by example P6-101 A basic introductory example of a Raku program

Migration guides

Perl 5 to Raku guide - overview How do I do what I used to do?
Perl 5 to Raku guide - special variables A comparison of special variables in Perl 5 and Raku
Perl 5 to Raku guide - operators Operators in Perl 5 to Raku: equivalencies and variations
Perl 5 to Raku guide - in a nutshell How do I do what I used to do? (Raku in a nutshell)
JavaScript (Node.js) to Raku - nutshell Learning Raku from Node.js, in a nutshell
Perl 5 to Raku guide - functions Builtin functions in Perl 5 to Raku
Perl 5 to Raku guide - syntax Syntactic differences between Perl 5 and Raku
Ruby to Raku - nutshell Learning Raku from Ruby, in a nutshell: what do I already know?
Haskell to Raku - nutshell Learning Raku from Haskell, in a nutshell: what do I already know?
Python to Raku - nutshell Learning Raku from Python, in a nutshell


Regexes: best practices and gotchas Some tips on regexes and grammars
Classes and objects A tutorial about creating and using classes in Raku
Concurrency Concurrency and asynchronous programming
Grammar tutorial An introduction to grammars
Core modules Core modules that may be useful to module authors
Doing math with Raku Different mathematical paradigms and how they are implemented in this language
Modules How to create, use, and distribute Raku modules
Entering unicode characters Input methods for unicode characters in terminals, the shell, and editors
Creating operators A short tutorial on how to declare operators and create new ones.
CompUnits and where to find them How and when Raku modules are compiled, where they are stored, and how to access them in compiled form.
Inter-process communication Programs running other programs and communicating with them
Input/Output File-related operations
Command line interface Creating your own CLI in Raku
Iterating Functionalities available for visiting all items in a complex data structure
Module packages Creating module packages for code reuse
Module development utilities What can help you write/test/improve your module(s)

Fundamental topics

Sets, bags, and mixes Unordered collections of unique and weighted objects in Raku
Enumeration An example using the enum type
Regexes Pattern matching against strings
Numerics Numeric types available in Raku
Control flow Statements used to control the flow of execution
Data structures How Raku deals with data structures and what we can expect from them
Contexts and contextualizers What are contexts and how to switch into them
Subscripts Accessing data structure elements by index or key
Unicode versus ASCII symbols Unicode symbols and their ASCII equivalents
Input/Output the definitive guide Correctly use Raku IO
Phasers Program execution phases and corresponding phaser blocks
Unicode Unicode support in Raku
Date and time functions Processing date and time in Raku
Native calling interface Call into dynamic libraries that follow the C calling convention
Metaobject protocol (MOP) Introspection and the Raku object system
Operators Common Raku infixes, prefixes, postfixes, and more!
Object orientation Object orientation in Raku
Raku native types Using the types the compiler and hardware make available to you
Packages Organizing and referencing namespaced program elements
Statement prefixes Prefixes that alter the behavior of a statement or a set of them
Type system Introduction to the type system of Raku
Lists, sequences, and arrays Positional data constructs
Syntax General rules of Raku syntax
Pragmas Special modules that define certain aspects of the behavior of the code
Hashes and maps Working with associative arrays/dictionaries/hashes
Grammars Parsing and interpreting text
Traits Compile-time specification of behavior made easy
Exceptions Using exceptions in Raku
Quoting constructs Writing strings, word lists, and regexes in Raku
Newline handling in Raku How the different newline characters are handled, and how to change the behavior
System interaction Working with the underlying operating system and running applications
Functions Functions and functional programming in Raku
Containers A low-level explanation of Raku containers
Performance Measuring and improving runtime or compile-time performance
Variables Variables in Raku

General reference

Traps to avoid Traps to avoid when getting started with Raku
About the docs Metadocumentation
Pod6 An easy-to-use markup language for documenting Raku modules and programs
Pod6 tables The good, the bad and the ugly
Community Information about the people working on and using Raku
Opener graphemes Valid opening paired delimiters
Terms Raku terms
FAQ Frequently asked questions about Raku
Glossary Glossary of Raku terminology
Testing Writing and running tests in Raku

Advanced topics

Experimental features Preview of upcoming new language features available for user evaluation