Difference between revisions of "Learning Haskell"

Revision as of 12:10, 26 August 2014

This portal points to places where you can go if you want to learn Haskell.

The Introduction to Haskell on the Haskell website tells you what Haskell gives you: substantially increased programmer productivity, shorter, clearer, and more maintainable code, fewer errors, higher reliability, a smaller semantic gap between the programmer and the language, shorter lead times. There is an old but still relevant paper about Why Functional Programming Matters (PDF) by John Hughes. More recently, Sebastian Sylvan wrote an article about Why Haskell Matters.

There is also a table comparing Haskell to other functional languages. Many questions about functional programming are answered by the comp.lang.functional FAQ.

You can ask questions to members of the Haskell community on mailing lists, IRC, or StackOverflow. We recommend installing the Haskell Platform.

Training courses

Short training courses aimed at existing programmers

On-site and public training courses by Well-Typed (2-day intro, 2-day advanced, custom on-site courses)
Software Engineering course on Functional Programming at the University of Oxford (1-week course)
Summerschool on Applied Functional Programming at Utrecht University (2-week course)

Material for self-study

Below there are links to certain introductory material. If you want to dig deeper, see Books and tutorials.

Textbooks

Online tutorials

Meta-tutorial
Haskell Fundamentals - get started and learn key concepts at Pluralsight (2-part, 5 hour online course)
Haskell Wikibook A thorough textbook with a step-by-step beginners track assuming no programming background. Also includes many advanced concepts, and adaptations of "Yet Another Haskell Tutorial", "Write Yourself a Scheme in 48 Hours", and "All about monads".
YAHT - Yet Another Haskell Tutorial (good tutorial available online)
Two dozen short lessons
A Gentle Introduction to Haskell - classic text, but not so gentle really :D
Haskell-Tutorial
Online Haskell Course (German)
Haskell tutorial for C Programmers
Learn You a Haskell for Great Good! Beautiful, illustrated Haskell tutorial for programmers with less of a functional programming background.
Learning Haskell Ongoing tutorial in the form of YouTube videos; updates slowly.
Pattern matching, first-class functions, and abstracting over recursion in Haskell, a simulation of the evaluation of map, foldr and foldl.

Advanced tutorials

Hitchhikers guide to Haskell
Write Yourself a Scheme in 48 Hours
Tackling the Awkward Squad (on I/O, interfacing to C, concurrency and exceptions)

Debugging/profiling/optimization

Monads

Type classes

Generic programming

Scrap your boilerplate

Popular libraries

Reference

The official language definition: Language and library specification
Tour of the Haskell Prelude
Haskell Reference
Haskell Reference card
A tour of the Haskell Monad functions
Tour of the Helium Prelude
Some common Hugs error messages
The Haskell Cheatsheet - A reference card and mini-tutorial in one.
A Glossary of common terminology.

Course material

Introduction to Functional Programming, Chalmers (for beginners at programming)
Functional Programming, Chalmers
Advanced Functional Programming, Chalmers
Parallel Functional Programming, Chalmers
Introduction to Haskell, University of Virginia CS 1501
CS 11 Caltech
Functional programming: course notes (English, Dutch, Spanish), slides in Dutch
CS1011: Tutorials, lab exercises and solutions
Stanford - Functional Systems in Haskell

Trying Haskell online

There are several websites where you can enter a Haskell program and run it. They are (in no particular order):

To create something like that yourself:

IHaskell

@@ Line 1: / Line 1: @@
+[[Category:Tutorials]]
-__NOTOC__
+This portal points to places where you can go if you want to learn Haskell.
-<center>
-[[Image:LearningHaskell.gif]]
-</center>
+The [[Introduction|Introduction to Haskell]] on the Haskell website tells you what Haskell gives you: substantially increased programmer productivity, shorter, clearer, and more maintainable code, fewer errors, higher reliability, a smaller semantic gap between the programmer and the language, shorter lead times.  There is an old but still relevant paper about [http://www.cse.chalmers.se/~rjmh/Papers/whyfp.html Why Functional Programming Matters] (PDF) by John Hughes. More recently, Sebastian Sylvan wrote an article about [[Why Haskell Matters]].
-==Introduction==
+There is also a [http://www.haskell.org/haskellwiki/Comparison table comparing Haskell to other functional languages]. Many questions about functional programming are answered by the [http://www.cs.nott.ac.uk/~gmh//faq.html comp.lang.functional FAQ].
-Haskell is a general purpose, purely functional programming language. This portal points to places where you can go if you want to learn Haskell.
+You can ask questions to members of the Haskell community on mailing lists, IRC, or StackOverflow. We recommend installing the [http://www.haskell.org/platform/ Haskell Platform].
-The [[Introduction]] on the [[Haskell]] homepage tells you that Haskell gives you: substantially increased programmer productivity; shorter, clearer, and more maintainable code; fewer errors; higher reliability; a smaller "semantic gap" between the programmer and the language; shorter lead times.
+== Training courses ==
-There is an old -- but still relevant -- paper about [http://www.md.chalmers.se/~rjmh/Papers/whyfp.html Why Functional Programming Matters] by John Hughes. More recently Sebastian Sylvan wrote an article about [[Why Haskell Matters]]. And there is a [http://www.haskell.org/haskellwiki/Comparison table comparing Haskell to other functional languages]. Many questions about functional programming are answered by the [http://www.cs.nott.ac.uk/~gmh//faq.html comp.lang.functional FAQ].
+Short training courses aimed at existing programmers
-==Implementations==
+* [http://www.well-typed.com/services_training On-site and public training courses] by Well-Typed (2-day intro, 2-day advanced, custom on-site courses)
-{| border=1 cellspacing=0 cellpadding=5 bgcolor=#FFFFFF width=100%|
+* [http://www.cs.ox.ac.uk/softeng/subjects/FPR.html Software Engineering course on Functional Programming] at the University of Oxford (1-week course)
-|-
+* [http://www.cs.uu.nl/wiki/USCS Summerschool on Applied Functional Programming] at Utrecht University (2-week course)
-|
-! Messages
-! Size
-! Tools
-! Remarks
-|-
-| [http://www.haskell.org/hugs/ Hugs]
-| +/-
-| ++
-| -
-| Fast compilation; used a lot for learning Haskell and rapid code development. See also [[WinHugs]].
-|-
-| [http://www.haskell.org/ghc/ GHC]
-| +
-| -
-| ++
-| Many language extensions; generated code is very fast
-|-
-| [http://www.cs.york.ac.uk/fp/nhc98/ NHC]
-| ?
-| +
-| ++
-| Profiling, debugging, tracing
-|-
-| [[Yhc]]
-| ?
-| +
-| ?
-| Compiles to bytecodes. Runtime easily portable. ''Still under heavy development.''
-|-
-| [http://www.cs.uu.nl/helium/ Helium]
-| ++
-| ++
-| -
-| No type classes (yet!) and thus incompatible with most material on this site. Made for teaching/learning.
-|}
+== Material for self-study ==
-==Books and tutorials==
+Below there are links to certain introductory material.  If you want to dig deeper, see [[Books and tutorials]].
-{| border=1 cellspacing=0 cellpadding=5 width=100% valign=top style="text-align:left" |
-! Tutorials
-! Textbooks
+=== Textbooks ===
-|- style="vertical-align:top"
+* [http://www.cs.yale.edu/homes/hudak/SOE/ The Haskell School of Expression]
-|
+* [http://www.haskellcraft.com/ Haskell: the Craft of Functional Programming]
+* [http://www.prenhall.com/allbooks/ptr_0134843460.html Introduction to Functional Programming using Haskell]
+* [http://www.cambridge.org/us/knowledge/isbn/item1129654/Introduction%20to%20Functional%20Programming%20Systems%20Using%20Haskell/?site_locale=en_US An Introduction to Functional Programming Systems Using Haskell]
+* [http://www.iro.umontreal.ca/~lapalme/Algorithms-functional.html Algorithms: A functional programming approach]
+* [http://homepages.cwi.nl/~jve/HR/ The Haskell Road to Logic, Maths, and Programming] (also freely [http://fldit-www.cs.uni-dortmund.de/~peter/PS07/HR.pdf available online]).
+* [http://www.cs.nott.ac.uk/~gmh/book.html Programming in Haskell]
+* [http://book.realworldhaskell.org/ Real World Haskell]
+* [http://nostarch.com/lyah.htm Learn You a Haskell for Great Good!]
+=== Online tutorials ===
-* [http://www.isi.edu/~hdaume/htut Yet Another Haskell Tutorial]
-* [ftp://ftp.geoinfo.tuwien.ac.at/navratil/HaskellTutorial.pdf Haskell-Tutorial]
+* [[Meta-tutorial]]
-* [http://www.informatik.uni-bonn.de/~ralf/teaching/Hskurs_toc.html Online Haskell Course] (German)
+* [http://pluralsight.com/training/Courses/Find?highlight=true&searchTerm=haskell Haskell Fundamentals - get started and learn key concepts] at Pluralsight (2-part, 5 hour online course)
-* [http://www.haskell.org/tutorial/ A Gentle Introduction to Haskell]
+* [http://en.wikibooks.org/wiki/Haskell Haskell Wikibook] A thorough textbook with a step-by-step beginners track assuming no programming background. Also includes many advanced concepts, and adaptations of "Yet Another Haskell Tutorial", "Write Yourself a Scheme in 48 Hours", and "All about monads".
-* [http://undergraduate.csse.uwa.edu.au/units/230.301/lectureNotes/tourofprelude.html A Tour of the Haskell Prelude (basic functions)]
+* [http://pub.hal3.name/daume02yaht.pdf YAHT - Yet Another Haskell Tutorial] (good tutorial available online)
 * [http://www.cs.ou.edu/~rlpage/fpclassCurrent/textbook/haskell.shtml Two dozen short lessons]
+* [http://www.haskell.org/tutorial/ A Gentle Introduction to Haskell] - classic text, but not so gentle really :D
-* [http://halogen.note.amherst.edu/%7Ejdtang/scheme_in_48/tutorial/overview.html Write Yourself a Scheme in 48 Hours]
+* [ftp://ftp.geoinfo.tuwien.ac.at/navratil/HaskellTutorial.pdf Haskell-Tutorial]
-* [http://www.haskell.org/haskellwiki/Hitchhikers_Guide_to_the_Haskell Hitchhikers Guide to Haskell]
-* [http://www.haskell.org/~pairwise/intro/intro.html Haskell for C Programmers]
+* [http://lasche.codingcrew.de/kurse/haskell/hskurs_index.htm Online Haskell Course] (German)
+* [http://collection.openlibra.com.s3.amazonaws.com/pdf/haskell_tutorial_for_c_programmers_en.pdf Haskell tutorial for C Programmers]
-* [http://research.microsoft.com/Users/simonpj/papers/marktoberdorf/ Tackling the Awkward Squad] (on I/O, interfacing to C, concurrency and exceptions)
+* [http://learnyouahaskell.com/ Learn You a Haskell for Great Good!] Beautiful, illustrated Haskell tutorial for programmers with less of a functional programming background.
+* [http://www.youtube.com/playlist?list=PL2672EBC57C1F5F9B Learning Haskell] Ongoing tutorial in the form of YouTube videos; updates slowly.
+*[https://stevekrouse.github.io/hs.js/ Pattern matching, first-class functions, and abstracting over recursion in Haskell], a simulation of the evaluation of map, foldr and foldl.
+=== Advanced tutorials ===
-|
+* [[Hitchhikers guide to Haskell]]
-* [http://www.haskell.org/soe The Haskell School of Expression]
+* [http://en.wikibooks.org/wiki/Write_Yourself_a_Scheme_in_48_Hours Write Yourself a Scheme in 48 Hours]
-* [http://www.cs.ukc.ac.uk/people/staff/sjt/craft2e/ Haskell: the Craft of Functional Programming]
+* [http://research.microsoft.com/en-us/um/people/simonpj/papers/marktoberdorf/ Tackling the Awkward Squad] (on I/O, interfacing to C, concurrency and exceptions)
-* [http://www.prenhall.com/allbooks/ptr_0134843460.html Introduction to Functional Programming using Haskell]
-* [http://books.cambridge.org/0521277248.htm An Introduction to Functional Programming Systems Using Haskell]
-* [http://www.iro.umontreal.ca/~lapalme/Algorithms-functional.html Algorithms: A functional programming approach]
-* [http://homepages.cwi.nl/~jve/HR/ The Haskell Road to Logic, Maths, and Programming]
+=== Debugging/profiling/optimization ===
-|-
+=== Monads ===
-! Reference
-! Course Material
+* [http://blog.sigfpe.com/2006/08/you-could-have-invented-monads-and.html You Could Have Invented Monads! (And Maybe You Already Have.)]
-|- style="vertical-align:top"
+* [http://homepages.inf.ed.ac.uk/wadler/papers/marktoberdorf/baastad.pdf Monads for Functional Programming]
+* [http://www.haskell.org/haskellwiki/All_About_Monads All about monads]
+* [[IO inside|IO inside: down the Rabbit Hole]]
+=== Type classes ===
-|
+* [http://homepages.inf.ed.ac.uk/wadler/papers/class/class.ps.gz The paper that for the first time introduced type classes and their implementation using dictionaries]
-* [http://www.haskell.org/hawiki/HaskellNewbie Haskell Newbie]
+* [[Research papers/Type systems#Type classes|More papers on the type classes]]
-* [http://www.cs.uu.nl/~afie/haskell/tourofsyntax.html Tour of the Haskell Syntax]
+=== Generic programming ===
+* [[Scrap your boilerplate]]
+=== Popular libraries ===
+* ByteStrings?
+* [http://legacy.cs.uu.nl/daan/download/parsec/parsec.html Parsec, a fast combinator parser]
+* [[Modern array libraries]]
+* [http://www.haskell.org/haskellwiki/Gtk2Hs/Tutorials Gtk2Hs, the GUI library]
+=== Reference ===
+* The official language definition: [[Language and library specification]]
+* [http://ww2.cs.mu.oz.au/172/Haskell/tourofprelude.html Tour of the Haskell Prelude]
 * [http://zvon.org/other/haskell/Outputglobal/index.html Haskell Reference]
-* [http://www.haskell.org/haskellwiki/Reference_card Haskell Reference Card]
+* Haskell [[Reference card]]
 * [http://members.chello.nl/hjgtuyl/tourdemonad.html A tour of the Haskell Monad functions]
-* [http://www.cs.uu.nl/helium/docs/TourOfPrelude.html Tour of the Helium Prelude]
+* [http://www.cs.uu.nl/wiki/bin/view/Helium/ATourOfTheHeliumPrelude Tour of the Helium Prelude]
-* [http://www.cs.ukc.ac.uk/people/staff/sjt/craft2e/errors/allErrors.html Some common Hugs error messages]
+* [http://www.cs.kent.ac.uk/people/staff/sjt/craft2e/errors/allErrors.html Some common Hugs error messages]
+* [http://cheatsheet.codeslower.com/ The Haskell Cheatsheet] - A reference card and mini-tutorial in one.
-* [http://www.haskell.org/haskellwiki/Category:Idioms Some Haskell Idioms]
-* [http://www.haskell.org/hawiki Questions and Answers (old Haskell wiki)]
+* A [http://www.haskell.org/haskellwiki/Category:Glossary Glossary] of common terminology.
-|
+=== Course material ===
-* [http://www.cs.chalmers.se/Cs/Grundutb/Kurser/d1pt/d1pta/external.html Programming in Haskell, Chalmers]
+* [http://www.cse.chalmers.se/edu/course/TDA555/ Introduction to Functional Programming, Chalmers] (for beginners at programming)
+* [http://www.cse.chalmers.se/edu/course/TDA452/ Functional Programming, Chalmers]
+* [http://www.cse.chalmers.se/edu/course/afp/ Advanced Functional Programming, Chalmers]
+* [http://www.cse.chalmers.se/edu/course/pfp/ Parallel Functional Programming, Chalmers]
+* [http://www.shuklan.com/haskell Introduction to Haskell], University of Virginia CS 1501
 * [http://www.cs.caltech.edu/courses/cs11/material/haskell/index.html CS 11 Caltech]
-* [http://www.cs.uu.nl/docs/vakken/lfp/ Functional programming]: course notes ([http://www.cs.uu.nl/~jeroen/courses/fp-eng.pdf English], [http://www.cs.uu.nl/~jeroen/courses/fp-nl.pdf Dutch], [http://www.cs.uu.nl/~jeroen/courses/fp-sp.pdf Spanish]), slides in Dutch
+* [http://www.cs.uu.nl/docs/vakken/lfp/ Functional programming]: course notes ([http://www.staff.science.uu.nl/~fokke101/courses/fp-eng.pdf English], [http://www.staff.science.uu.nl/~fokke101/courses/fp-nl.pdf Dutch], [http://www.staff.science.uu.nl/~fokke101/courses/fp-sp.pdf Spanish]), slides in Dutch
-* [http://www.cse.unsw.edu.au/~cs1011/ CS1011]: Tutorials, lab exercises and solutions
+* [http://www.cse.unsw.edu.au/~cs1011/05s2/ CS1011]: Tutorials, lab exercises and solutions
+* Stanford - [http://www.scs.stanford.edu/11au-cs240h/ Functional Systems in Haskell]
-|}
+== Trying Haskell online ==
+There are several websites where you can enter a Haskell program and run it. They are (in no particular order):
-Check [http://www.haskell.org/haskellwiki/Books_and_tutorials Books and tutorials] for a more comprehensive list.
+* [https://cloud.sagemath.com/ SageMathCloud]
+* [https://www.fpcomplete.com/school/using-fphc FP Haskell Center]
+* [http://tryhaskell.org/ Try Haskell]
+* [http://www.codeworld.info/ Codeworld]
+To create something like that yourself:
-(perhaps these pages can be merged somehow, or the more introductory material can go on this page, and the advanced books and papers can go on a different page?)
+* [http://gibiansky.github.io/IHaskell/ IHaskell]