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Topic: Haskell programming language

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In the News (Fri 19 Jul 19)

  Haskell programming language
In the 1980s, a committee was formed to create a standardized functional programming language with lazy evaluation.
Haskell is, as of 2002, the functional language on which the most research is being performed.
Its biggest deviation from Haskell is in the use of Uniqueness types for input as opposed to Monads.
www.ebroadcast.com.au /lookup/encyclopedia/ha/Haskell.html   (454 words)

 Haskell (programming language) - Wikipedia, the free encyclopedia
Haskell is a standardized pure functional programming language with non-strict semantics, named after the logician Haskell Curry.
The language is, as of 2002, the lazy functional language on which the most research is being performed.
In particular, critiques levelled against functional programming languages and non-mainstream programming languages are applicable to Haskell.
en.wikipedia.org /wiki/Haskell_programming_language   (1953 words)

 Wikinfo | Haskell programming language   (Site not responding. Last check: 2007-11-03)
In the 1980s, a committee was formed to create a standardized functional programming language with non-strict semantics.
The latest semi-official language standard is Haskell 98, intended to specify a minimal, portable version of the language for teaching and as a base for future extensions.
The language is, as of 2002, the functional language on which the most research is being performed.
www.wikinfo.org /wiki.php?title=Haskell_programming_language   (611 words)

 Introduction - HaskellWiki
The language is named for Haskell Brooks Curry, whose work in mathematical logic serves as a foundation for functional languages.
This contrasts strongly with programs in conventional languages like C, which consist essentially of a carefully-specified sequence of assignments, or Java, in which the ordering of method calls is crucial to the meaning of a program.
The language in which the engineers describe their design is functional, and it uses lazy evaluation extensively to avoid recomputing parts of the design which are not currently visible on the screen.
www.haskell.org /haskellwiki/Introduction   (2832 words)

 Rationale for O'Haskell   (Site not responding. Last check: 2007-11-03)
Programming with explicit synchronization operations seems to require a major rethink in O'Haskell, a topic which is illustrated on the O'Haskell programming examples page.
The monadic approach is predominantly associated with Haskell and its imperative I/O system [20], but the technique is by no means limited to this language or to a particular evaluation strategy [21, 22], not even to languages that exclusively belong to the functional category [23].
Likewise, in object-oriented programming the addition of a new data-producer (a new class) is a cinch, while the introduction of another data-consumer means the extension of an record type with a new selector, a global undertaking with implications to potentially all existing classes.
www.cs.chalmers.se /~nordland/ohaskell/rationale.html   (5676 words)

 CS 11: Haskell track
Haskell Curry, one of the major figures in the development of the theoretical foundations of functional programming languages (notably the theory of combinatory logic).
Haskell is a highly enjoyable language to program in for many tasks, but it isn't perfect.
The first is The Haskell School of Expression by Paul Hudak, which uses multimedia programs as a way of motivating the study of Haskell.
www.cs.caltech.edu /courses/cs11/material/haskell/index.html   (3385 words)

 Language, Logic and Computation
The style of presentation is influenced by functional programming, category theory, the Curry-Howard correspondence and the Squiggol school of constructive programming (catamorphisms, anamorphisms, etc.); Haskell is used as an implementation meta-language.
The Haskell code for converting DFAs to regular expressions is in the file REConv.hs; other code files you might want for exam study are in the same directory and in the code directory.
Haskell in perspective: you might also want to read one of the Haskell designer's talks to the same audience, a few years before, giving a retrospective on the Haskell language.
www.willamette.edu /~fruehr/LLC/index.html   (1072 words)

 Moon Free of Shadows
Recently I read the second public draft of a paper on the history of the Haskell programming language (the final paper will be submitted to the 2007 History of Programming Languages conference).
The former exemplifies linguistic abstraction, ubiquitous in Lisp and Lisp-related languages.
object-oriented programming in Scheme or language-oriented programming in Ruby, although whether this works in practice is more a reflection of the syntactic qualities of the two languages than anything else.
blogs.sun.com /robc/entry/a_history_of_haskell   (716 words)

 A Haskell mini-primer
Pan is embedded in the functional programming language Haskell.
A Haskell program is made up of a collection of definitions.
Haskell is statically typed, but in most cases, the compiler or interpreter can infer all types automatically.
conal.net /pan/haskell-primer.htm   (1267 words)

 Haskell Prime - Trac   (Site not responding. Last check: 2007-11-03)
The Haskell 98 standard is the "stable" branch of the language, and that has been a big success.
Haskell' will be a conservative refinement of Haskell 98.
It will be the work of this committee to adopt a set of language extensions and modifications and to standardize a new set of libraries.
hackage.haskell.org /trac/haskell-prime   (363 words)

 XML Matters: Transcending the limits of DOM, SAX, and XSLT
DOM is language independent, and its "document object model" is provided by libraries in many general-purpose programming languages.
In Haskell syntax, a function is whatever thing occurs to the left of an equal sign, and the definition is to the right of the equal sign.
Information about Haskell, including several tutorials, numerous papers, and various compilers and interpreters can be found at the Haskell language Web site.
www-106.ibm.com /developerworks/xml/library/x-matters14.html   (2385 words)

 Implementing Haskell: Language Implementation as a Tool Building Exercise   (Site not responding. Last check: 2007-11-03)
During the process of implementing a system supporting the Haskell language [HJW+92], we found that considerable advances in productivity and reliability can be obtained by building specialised little tools catering for specific language-related problems.
``Haskell is a general-purpose, purely functional programming language exhibiting many of the recent innovations in functional (as well as other) programming language research, including higher order functions, lazy evaluation, static polymorphic typing, user-defined data types, pattern matching and list comprehensions.
Haskell has a number of characteristics, such as the layout rule and the definable precedence and associativity of operators that made the use of a hand-crafted scanner preferable.
www.spinellis.gr /pubs/jrnl/1993-StrProg-Haskell/html/exp.html   (6233 words)

 Haskell programming language (via CobWeb/3.1 planetlab2.netlab.uky.edu)   (Site not responding. Last check: 2007-11-03)
'''Haskell''' is a standardized functional programming language with non-strict semantics, named after the logician Haskell Curry.
It was created by a committee formed in the 1980s for the express purpose of defining such a language.
Helium (http://www.cs.uu.nl.cob-web.org:8888/helium/) is a newer dialect of Haskell.
haskell-programming-language.iqnaut.net.cob-web.org:8888   (637 words)

 HaSh - The Haskell Shell (Home Page)
Haskell is also unusual in that it is lazy, which is to say no expression is evaluated unless it absolutely must be.
Finally, Haskell's overall rationality, by which I mean the ability to reason about the code you write.
In the past, graphical shells or visual programming languages have often either scaled poorly or been clumsy enough that they were not sufficiently useful.
nellardo.com /lang/haskell/hash   (600 words)

 Dr. Dobb's | Functional Programming and FPCA '89 | July 22, 2001   (Site not responding. Last check: 2007-11-03)
The language implemented was called "MIRANDA" and introduced a formalism called "currying" (named after the theoretician Haskell B. Curry): A function of n arguments may be treated as a concatenation of n single-argument functions.
Haskell, on the other hand, supports modular programming by requiring the definition of clean interfaces between modules and of abstract data types.
Haskell has objects, classes, multiple inheritance, and all other OOP features except one, of course: Haskell objects don't have internal "states," because this would contradict the referential transparency of FP.
www.ddj.com /184408252   (4509 words)

 Linux Development Tools: Languages - Haskell   (Site not responding. Last check: 2007-11-03)
The Glasgow Haskell Compiler is a robust, fully-featured, optimising compiler for the functional programming language Haskell.
GHC compiles Haskell to either native code or C. It implements numerous experimental language extensions to Haskell for example concurrency, a foreign language interface, several type-system extensions, exceptions, and so on.
Hugs is best used as a Haskell program development system: it boasts extremely fast compilation, supports incremental compilation, and has the convenience of an interactive interpreter (within which one can move from module to module to test different portions of a program).
www.hotfeet.ch /~gemi/LDT/lang_haskell~.html   (258 words)

 Beginning with the Haskell Programming Language
One of the most common programming habits in imperative programming is to assign a variable one value, then assign it a different value; perhaps along the way we test whether the variable has obtained certain key values.
In Haskell, by contrast, evaluation is lazy--expressions are only evaluated when, and as much, as they need to be (in fairness, C does include shortcutting of Boolean expressions which is a minor kind of laziness).
This is partly due to the concise syntax of Haskell, but a greater reason is because of the emphasis in functional programming of breaking down problems into their component parts (rather than just sort of "doing what needs to be done" at each point in an imperative program).
gnosis.cx /publish/programming/Haskell.xml   (4847 words)

 Haskell - TunesWiki
Haskell is the reference among pure lazy functional Programming Languages.
Data Field Haskell extend Haskell with Collection-Oriented capabilities via data fields, a generic and flexible data type for indexed entities.
Chameleon - a Haskell-style Programming Language with flexible overloading via constraint handling rules.
tunes.org /wiki/Haskell   (202 words)

 Citations: Report on the Programming Language Haskell: A Non-Strict - Hudak (ResearchIndex) (via CobWeb/3.1 ...   (Site not responding. Last check: 2007-11-03)
....the world of programming language statements into the world of predicate calculus, which is much more orderly.
Programming languages are often classified according to one of two di#erent paradigms: imperative and declarative.
It was first designed for high performance parallel distributed programming on clusters of PC s [13] Haskell # was shown expressive enough for the specification of a wider range of concurrent programs [10] One important premise in the design of Haskell....
citeseer.ist.psu.edu.cob-web.org:8888 /context/25251/0   (2357 words)

 Haskell Language
In "Wearing the hair shirt: a retrospective on Haskell" (2003, available as a set of PowerPoint slides at http://www.research.microsoft.com/~simonpj/papers/haskell-retrospective/) SimonPeytonJones provides an overview of the (rather short) history of Haskell.
HaXml, being embedded in Haskell gives the full power of a programming language on top of the easy XML transformations.
See also http://www.haskell.org/visualhaskell/ for a Haskell plugin for VisualStudio (not to be confused with a similar project at http://www.cin.ufpe.br/~haskell/vhs/index.html).
c2.com /cgi/wiki?HaskellLanguage   (561 words)

 Haskell from FOLDOC
(Named after the logician Haskell Curry) A lazy purely functional language largely derived from Miranda but with several extensions.
Haskell was designed by a committee from the functional programming community in April 1990.
Haskell 1.3 added many new features, including monadic I/O, standard libraries, constructor classes, labeled fields in datatypes, strictness annotations, an improved module system, and many changes to the Prelude.
www.instantweb.com /foldoc/foldoc.cgi?Haskell   (202 words)

 Haskell - HaskellWiki
Haskell, for the third year running, was used by the winning team in the ICFP Programming Contest.
Jeremy Gibbons announced that he, Graham Hutton and Conor McBride at Nottingham are organizing a seminar, Fun in the Afternoon, on functional programming and related topics.
Andres Loeh asked for contributions towards the 11th Haskell Communities and Activities Report, a bi-annual overview of the state of Haskell as well as Haskell-related projects of all flavours.
www.haskell.org   (435 words)

 Notes on Haskell   (Site not responding. Last check: 2007-11-03)
Implementations are freely available on many platforms, and for a language you've never heard of it has a surprisingly large number of useful libraries.
Haskell takes some getting used to, but programming in Haskell is an enormously satisfying experience once you understand it.
With Haskell, you can have all the type safety (and much more) that Java offers, with the uniform notation that Python offers.
www.xoltar.org /languages/haskell.html   (233 words)

 gmane.comp.lang.haskell.general   (Site not responding. Last check: 2007-11-03)
Two representatives of the Haskell.org Summer of Code mentors have been chosen by the Haskell SoC team to represent the SoC effort, and the community at large, at this event: Shae Erisson and myself.
We'll be attending the 1 day summit, and plan to present a short, focused talk introducing Haskell, and describing how the distributed, open source community around Haskell has been built.
As part of this, we're seeking the community's advice and ideas on how well the Haskell community "works" as a (somewhat anarchic) organisation, how we're progressing, what things have been done well, and what needs to be done better.
comments.gmane.org /gmane.comp.lang.haskell.general/14339   (487 words)

 Florida Tech, CS: Functional Programming (Fall 2005)
Since there is litte exposure to functional languages in the usual curriculum, it is impossible to effectlively comparing comprare programming in a functional language with programming in an imperative language.
Students are expected to know how to program in an imperative language like Java, Ada or Pascal, and to know about algorithms and data structures.
The final project will be based on the ICFP 2004 programming contest "Dinner with Ambiants".
www.cs.fit.edu /~ryan/fun   (442 words)

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