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

JavaScript (Node.js) to Raku - nutshell Learning Raku from Node.js, in a nutshell
Perl 5 to Raku guide - syntax Syntactic differences between Perl 5 and Raku
Perl 5 to Raku guide - functions Builtin functions in Perl 5 to Raku
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
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
Perl 5 to Raku guide - in a nutshell How do I do what I used to do? (Raku in a nutshell)


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

Fundamental topics

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

General reference

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

Advanced topics

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