Dependent type - HaskellWiki
The concept of dependent types General Wikipedia Dependent Types in Programming abstract in APPSEM'2000 Do we need dependent types? by Daniel Fridlender and Mia Indrika, 2001. Type theory Simon Thompson: Type Theory and Functional Programming. Section 6.3 deals with dependent types, but because of the strong emphasis on Curry-Howard isomorphism and the connections between logic and programming, th
H-99: Ninety-Nine Haskell Problems - HaskellWiki
These are Haskell translations of Ninety-Nine Lisp Problems, which are themselves translations of Ninety-Nine Prolog Problems. If you want to work on one of these, put your name in the block so we know someone's working on it. Then, change n in your block to the appropriate problem number, and fill in the <Problem description>,<example in Haskell>,<solution in haskell> and <description of implemen
Free structure - HaskellWiki
Introduction This article attempts to give a relatively informal understanding of "free" structures from algebra/category theory, with pointers to some of the formal material for those who desire it. The later sections make use of some notions from category theory, so some familiarity with its basics will be useful. Algebra What sort of structures are we talking about? The distinction between free
Avoiding partial functions - HaskellWiki
There are several partial functions in the Haskell standard library. If you use them, you always risk to end up with an undefined. In this article we give some hints how to avoid them, leading to code that you can be more confident about. In addition to the below rewrites, many partial functions can be avoided by using variants from the safe library. For a partial function f the general pattern is
Cabal-Install - HaskellWiki
This article is a stub. You can help by expanding it. The cabal-install package provides the cabal command-line tool which simplifies the process of managing Haskell software by automating the fetching, configuration, compilation and installation of Haskell libraries and programs. Those packages must be prepared using Cabal and should be present at Hackage. See https://cabal.readthedocs.io/ for mo
Why Haskell matters - HaskellWiki
What are functional programming languages? Programming languages such as C/C++/Java/Python are called imperative programming languages because they consist of sequences of actions. The programmer quite explicitly tells the computer how to perform a task, step-by-step. Functional programming languages work differently. Rather than performing actions in a sequence, they evaluate expressions. The lev
Hugs 98
Note: Hugs is no longer in development. The content on these pages is provided as a historical reference and as a resource for those who are still interested in experimenting with or otherwise exploring the system. Hugs 98 is a functional programming system based on Haskell 98, the de facto standard for non-strict functional programming languages. Hugs 98 provides an almost complete implementation
Yhc - HaskellWiki
Yhc is no longer actively developed or maintained - see this blog post. - York Haskell Compiler Warning, this compiler is not finished, and is not useable as a standard Haskell Compiler. It is also not an official York project. Installing Yhc Windows users - See the instructions to get a snapshot. Other users - See the building guide. Further information Blog Mailing List - users and developers Bu
Glasgow Haskell Compiler — The Glasgow Haskell Compiler
Latest News 23 February 2024 GHC 9.8.2 Released! [download] 9 January 2024 GHC 9.6.4 Released! [download] 10 November 2023 GHC 9.4.8 Released! [download] What is GHC? GHC is a state-of-the-art, open source compiler and interactive environment for the functional language Haskell. Highlights: GHC supports the entire Haskell 2010 language plus a wide variety of extensions. GHC has particularly good s
IO inside - HaskellWiki
Haskell I/O can be a source of confusion and surprises for new Haskellers - if that's you, a good place to start is the Introduction to IO which can help you learn the basics (e.g. the syntax of I/O expressions) before continuing on. While simple I/O code in Haskell looks very similar to its equivalents in imperative languages, attempts to write somewhat more complex code often result in a total m
Haskell: Definition of the language and the standard libraries
Definition of Haskell and the Standard Libraries The Haskell 98 Report has undergone an extensive process of revision since its publication in January 1999. This process converged in January 2003, producing the Revised Report. The Revised Report is published by Cambridge University Press, as a book "Haskell 98 language and libraries: the Revised Report", and also as a Special Issue of the Journal
Performance/Strictness - HaskellWiki
Haskell Performance Resource Constructs: Data Types - Functions Overloading - FFI - Arrays Strings - Integers - I/O Floating point - Concurrency Modules - Monads Techniques: Strictness - Laziness Avoiding space leaks Accumulating parameter Implementation-Specific: GHC - nhc98 - Hugs Yhc - JHC Haskell is a non-strict language, and most implementations use a strategy called laziness to run your prog
seq - HaskellWiki
While its name might suggest otherwise, the seq function's purpose is to introduce strictness to a Haskell program. As indicated by its type signature: it takes two arguments of any type, and returns the second. However, it also has the important property that it is always strict in its first argument. In essence, seq is defined by the following two equations: (See Bottom for an explanation of the
Haskell - HaskellWiki
2023 November GHC 9.4.8 is released October GHC 9.8.1 is released September GHC 9.6.3 is released August: GHC 9.4.6 is released June Stackage LTS 21.0 is released with GHC 9.4.5 Stackage Nightly moves to GHC 9.6 May GHC 9.2.8 is released GHC 9.6.2 is released April GHC 9.4.5 is released 2022 October The Haskell Error Index is introduced 2021: December: GHC 9.0.2 is released August: GHC 8.10.7 is r
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Free monad - HaskellWiki
Partial application - HaskellWiki
Currying - HaskellWiki
Haskell Platform
7.8.Kind polymorphism and promotion
GHC/Kinds - HaskellWiki