- Haskell - Haskell.org

ANNOUNCE: zipper-0.1
by Andres Loeh 13 Jan '09

13 Jan '09

zipper-0.1: Generic zipper for systems of recursive datatypes ============================================================= The zipper is a data structure that allows typed navigation on a value. It maintains a subterm as a current point of focus. The rest of the value is the context. Focus and context are automatically updated when navigating up, down, left or right in the value. The term that is in focus can also be modified. This library offers a generic zipper for systems of datatypes. In particular, it is possible to move the focus between subterms of different types, in an entirely type-safe way. This library is built on top of the multirec library, so all that is required to get a zipper for a datatype system is to instantiate the multirec library for that system. Requirements ------------ * GHC 6.8.3 or later * Cabal 1.2.1 or later Download -------- With cabal-install: cabal install zipper Get the package: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/zipper Get the source: svn checkout https://svn.cs.uu.nl:12443/repos/dgp-haskell/zipper/trunk Bugs & Support -------------- Report issues, request features, or just discuss the library with the authors, maintainers, and other interested persons at: http://www.haskell.org/mailman/listinfo/generics -- Andres Loeh, Universiteit Utrecht mailto:andres@cs.uu.nl mailto:mail@andres-loeh.de http://www.andres-loeh.de

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ANNOUNCE: multirec-0.2
by Andres Loeh 13 Jan '09

13 Jan '09

multirec-0.2: Generic programming with systems of recursive datatypes ===================================================================== Many generic programs require information about the recursive positions of a datatype. Examples include the generic fold, generic rewriting or the Zipper data structure. Several generic programming systems allow to write such functions by viewing datatypes as fixed points of a pattern functor. Traditionally, this view has been limited to so-called regular datatypes such as lists and binary trees. In particular, systems of mutually recursive datatypes have been excluded. With the multirec library, we provide a mechanism to talk about fixed points of systems of datatypes that may be mutually recursive. On top of this representations, generic functions such as the fold or the Zipper can then be defined. Changelog (changes w.r.t. multirec-0.1) --------------------------------------- * Constructor information and generic show (Generics.MultiRec.Show). * Variants of fold (Generics.MultiRec.FoldAlg) that make the definition of algebras significantly more convenient. * Template Haskell code to generate the boilerplate required to instantiate this library to a system of datatypes. Requirements ------------ * GHC 6.8.3 or later * Cabal 1.2.1 or later Download -------- With cabal-install: cabal install multirec Get the package: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/multirec Get the source: svn checkout https://svn.cs.uu.nl:12443/repos/dgp-haskell/multirec/trunk Bugs & Support -------------- Report issues, request features, or just discuss the library with the authors, maintainers, and other interested persons at: http://www.haskell.org/mailman/listinfo/generics -- Andres Loeh, Universiteit Utrecht mailto:andres@cs.uu.nl mailto:mail@andres-loeh.de http://www.andres-loeh.de

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ANN: ghci-haskeline 0.1
by Judah Jacobson 13 Jan '09

13 Jan '09

I'm pleased to announce the first release of ghci-haskeline. This package uses the GHC API to reimplement ghci with the Haskeline library as a backend. Haskeline is a library for line input in command-line programs, similar to readline or editline, which is written in Haskell and thus (hopefully) more easily integrated into other Haskell programs. To install, you can use cabal update && cabal install ghci-haskeline, or else download it from: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ghci-haskeline Haskeline is planned to be used officially with GHC in the 6.12 release: http://hackage.haskell.org/trac/ghc/ticket/2812 So the more testing that can be done ahead of time, the better! For more information about Haskeline or to file a bug or feature request, visit its trac: http://trac.haskell.org/haskeline Finally, a partial list of the benefits of ghci-haskeline over the readline/editline versions: - Full interactive interface on Windows. - Support for a wide variety of character encodings in line interaction (http://trac.haskell.org/haskeline/wiki/UnicodeSupport) Note that GHC source files are still required to be UTF-8. - Tab completion of Unicode identifiers and filenames. - Tab completion of quoted filenames within Haskell expressions. Best, -Judah

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type family vs. polymorphism
by Andres Loeh 12 Jan '09

12 Jan '09

Hi. Here's a strange interaction of type families and higher-rank polymorphism (tested with both ghc-6.8.3 and ghc-6.10.1): {-# LANGUAGE TypeFamilies, EmptyDataDecls, RankNTypes #-} data X (a :: *) type family Y (a :: *) -- This works (datatype). i1 :: (forall a. X a) -> X Bool i1 x = x -- This works too (type family and extra arg). i2 :: (forall a. a -> Y a) -> Y Bool i2 x = x True -- This doesn't work (type family). -- i3 :: (forall a. Y a) -> Y Bool -- i3 x = x I would expect i3 to be ok as well. Note that this is a simplified example and not really useful in its simplified form. Cheers, Andres -- Andres Loeh, Universiteit Utrecht mailto:andres@cs.uu.nl mailto:mail@andres-loeh.de http://www.andres-loeh.de

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The Monad.Reader (13) - Call for copy
by Wouter Swierstra 12 Jan '09

12 Jan '09

Call for Copy The Monad.Reader - Issue 13 Please consider writing an article for the next issue of the Monad.Reader. The deadline for the next issue is: ** February 13, 2009 ** * Submission Details * Get in touch with me if you intend to submit something. The sooner you let me know what you're up to, the better. Please submit articles for the next issue to me by e-mail (wss at cs.nott.ac.uk). Articles should be written according to the guidelines available from http://www.haskell.org/haskellwiki/The_Monad.Reader Please submit your article in PDF, together with any source files you used. The sources will be released together with the magazine under a BSD license. If you would like to submit an article, but have trouble with LaTeX please let me know and we'll sort something out. All the best, Wouter This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation.

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ANN: HLint 1.2
by Neil Mitchell 11 Jan '09

11 Jan '09

Hi, I am pleased to announce HLint version 1.2. HLint is a lint-like tool for Haskell that detects and suggests improvements for your code. HLint is compatible with most GHC extensions, and supports a wide variety of suggestions, and can be extended with additional user suggestions. To install: cabal update && cabal install hlint Web page: http://www-users.cs.york.ac.uk/~ndm/hlint/ Biggest new feature: List recursion suggestions. For example, running HLint over the GHC compiler now suggests things such as: Example.hs:3:1: Warning: Use foldr Found: seqList [] b = b seqList (x : xs) b = x `seq` seqList xs b Why not: seqList xs b = foldr seq b xs Example.hs:6:1: Warning: Use foldr Found: seqIds [] = () seqIds (id : ids) = seqId id `seq` seqIds ids Why not: seqIds ids = foldr (seq . seqId) () ids Example.hs:13:1: Warning: Use foldl Found: rev_app [] xs = xs rev_app (y : ys) xs = rev_app ys (y : xs) Why not: rev_app ys xs = foldl (flip (:)) xs ys HLint will automatically detect if you should have used a map, a foldr or a foldl and suggest how to change your code. In the GHC, darcs and Hoogle code bases there are no obvious map-like functions, which is a good sign :-) Changes from last time: * More GHC extensions supported - including record wild cards and fixes to a number of existing extensions. These changes are thanks to Niklas and the haskell-src-exts package. * Many infix operators are now correctly associated with the right priority. * All hints are now ignored, warnings or errors. Hopefully this should make it clearer what hints are most important. As part of this, the format for defining ignore files has changed completely - see the manual for the new format. * Lots of new hints have been added - many from users of HLint. * Many bugs have been fixed. Can any follow-up discussions please be directed to haskell-cafe@. All comments, questions, bug reports are welcome! Neil

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(CfP) UML&AADL'2009 : CALL FOR PAPERS
by Isabelle Perseil 11 Jan '09

11 Jan '09

********************************************************************** CALL FOR PAPERS: UML&AADL2009 http://www.artist-embedded.org/artist/UML-AADL-2009.html Workshop held in conjunction with ICECCS 2009 The fourteenth IEEE International Conference on Engineering of Complex Computer Systems http://www.iceccs.org/ June 02, 2009 Potsdam, Germany ************************************************************************ Submission deadline: February 20, 2009 -------------------------------------- Topics ====== New real-time systems have increasingly complex architectures because of the intricacy of the multiple interdependent features they have to manage. They must meet new requirements of reusability, interoperability, flexibility and portability. These new dimensions favor the use of an architecture description language that offers a global vision of the system, and which is particularly suitable for handling real-time characteristics. Due to the even more increased complexity of distributed, real-time and embedded systems (DRE), the need for a model-driven approach is more obvious in this domain than in monolithic RT systems. The purpose of this workshop is to provide an opportunity to gather researchers and industrial practitioners to survey existing efforts related to behavior modeling and model-based analysis of DRE systems. This workshop seeks contributions from researchers and practitioners interested in all aspects of the representation, analysis, and implementation of DRE system behavior and/or architecture models. To this end, we solicit papers (no more than 6 pages long) related to, but not limited to, the following principal topics: - Multi-domain specific modeling languages - Model transformation and generative approaches - Model-based Methodologies - Integration of different formalisms (e.g., Simulink/StateFlow, StateMate and Scade-drive) - Model Checking of architecture specifications - ADLs behavioral models simulation, Scheduling analysis and Worst-case execution time prediction Workshop Format =============== This full-day workshop will consist of an introduction of the topic by the workshop organizers, presentations of accepted papers, and in depth discussion of previously identified subjects emerging from the submissions. A summary of the discussions will be made available. Submission and Publication ========================== To contribute, please send a position paper or a technical paper to agusti[dot]canals[at]c-s[dot]fr with ICECCS09 UML&AADL Workshop in the title. Papers should not exceed 6 pages. Submitted manuscripts should be in English and formatted in the style of the IEEE Computer Society Proceedings Format. Preferably, submissions should be in PDF format. All selected papers will be published in the IEEE Computer Society Press Proceedings. IMPORTANT DATES =============== Submission deadline: February 20, 2009 All Notification of acceptance: March 05, 2009 Workshop date: June 02, 2009 Organizational sponsors ======================= ARTIST NoE OMG Organizers and Programme Steering Committee =========================================== Jean-Michel Bruel (IRIT, France) Agusti Canals (CS, France) Robert de Simone (INRIA, France) Sébastien Gérard (CEA-LIST, France) Isabelle Perseil (TELECOM ParisTech, France) Publicity Chair =============== Sun Meg (CWI, The Netherlands) IEEE CS TCCX Coordinator ======================== Mike Hinchey (NASA GSFC and Loyola College in Maryland, USA) Programme Committee =================== Yamine Ait Ameur (LISI / ENSMA, France) Keijiro Araki (Kyushu University, Japan) Grady Booch (IBM Fellow, USA) Agusti Canals (CS, France) Juan Antonio de la Puente (Universidad Politécnica de Madrid, Spain) Sebastien Demathieu (THALES, France) Dionisio De Niz Villasenor (SEI, Carnegie Mellon, USA) Vincent Englebert (University of Namur, Belgium) Madeleine Faugère (THALES, France) Mamoun Filali (IRIT, France) Robert France (Colorado State University, USA) Sébastien Gérard (CEA-LIST, France) Patrick Heymans (University of Namur, Belgium) Irfan Hamid (Microsoft Corp, Canada) J.J.M. Hooman (Embedded Systems Institute, The Netherlands) Bruce Lewis (US Army AMCOM) Johan Lilius (Åbo Akademi University, Finland) Ricardo J. Machado (University of Minho, Portugal) Sun Meg (CWI, The Netherlands) Dominique Mery (LORIA, France) Nenad Medvidovic (University of Southern California, USA) Thierry Millan (IRIT, France) Richard Paige (University of York, United Kingdom) Marc Reynolds (University of Western Australia, Australia) José Raúl Romero Salguero (Universidad de Córdoba, Spain) Bernhard Rumpe (Braunschweig University of Technology, Germany) Douglas C. Schmidt (Vanderbild University, USA) Françoise Simonot Lion (LORIA, France) Oleg Sokolsky (University of Pennsylvania, USA) Roy Sterritt (University of Ulster, United Kingdom) Jörn Guy Süß ( University of Queensland, Australia) Jing Sun (University of Auckland, New Zealand) Bedir Tekinerdogan (Bilkent University, Turkey) Martin Törngren (KTH - Royal Institute of Technology, Sweden) Laurence Tratt (Bournemouth University, United Kingdom) Tullio Vardanega (University of Padua, Italy) François Vernadat (CNRS-LAAS, France) Thomas Vergnaud (THALES, France) Eugenio Villar (Universidad de Cantabria, Spain) Sergio Yovine (CNRS-Verimag, France) Roberto V. Zicari (Goethe University Frankfurt, Germany)

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HaskellWiki Interruption for Upgrade
by Ashley Yakeley 11 Jan '09

11 Jan '09

I will be upgrading HaskellWiki to the latest stable version of MediaWiki (1.13.3) over the next few hours. The plan is this: 1. Switch off HaskellWiki. This may involve switching off the Apache server running haskell.org. 2. Dump the database to a file. 3. Download MediaWiki 1.13.3. 4. Run its upgrade process. 5. Install useful extensions. I'm currently looking at this: http://www.mediawiki.org/wiki/Manual:Combating_spam 6. Tweak config file. 7. Switch everything back on. 8. Post again here. -- Ashley Yakeley

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Haskell Weekly News: Issue 100 - January 10, 2009
by Brent Yorgey 10 Jan '09

10 Jan '09

--------------------------------------------------------------------------- Haskell Weekly News http://sequence.complete.org/hwn/20090110 Issue 100 - January 10, 2009 --------------------------------------------------------------------------- Welcome to issue 100 of HWN, a newsletter covering developments in the [1]Haskell community. Welcome to the 100th (!) issue of the Haskell Weekly News, suitably published on your friendly neighborhood HWN editor's 1000th birthday (base 3). If you ever have content to be included in the HWN (announcements, blog posts, major life news) or a suggestion on how the HWN could be more useful to you as a window into the goings-on of the Haskell community, please don't hesitate to send it along, using the contact information at the end of each issue. Announcements Haskell BLAS bindings version 0.7. Patrick Perry [2]announced the [3]release of version 0.7 of the [4]blas package, Haskell bindings to the BLAS (Basic Linear Algebra Subprograms) library. According to Patrick, this release is "a major milestone---it is finally the library with all of the features that I want." X Haskell Bindings. Antoine Latter [5]announced a preview release of the [6]X Haskell Bindings. The goal of the library is to provide low-level access to the X11 protocol, in the spirit of the [7]X C Bindings. Data.TCache 0.5.5. Alberto G. Corona [8]announced the 0.5.5 release of the [9]TCache package, a transactional data cache with configurable persistence. This version adds the the capability to safely handle transactions, and incrementally serialize many data types simultaneously in the same piece of code. haskell-src-exts 0.4.8. Niklas Broberg [10]announced a new release (0.4.8) of the [11]haskell-src-exts package. This is a bug-fix release in the wake of the flurry of bug reports due to [12]hlint. bytestring-trie 0.1.2 (bugfix). wren ng thornton [13]announced a bugfix release for [14]bytestring-trie, efficient finite maps from (byte)strings to values. This release fixes a bug in alterBy, and adds an Eq instance. wxHaskell 0.11.1. Jeremy O'Donoghue [15]announced the release of [16]wxHaskell 0.11.1, a Haskell binding for the wxWidgets GUI library. The main highlights include support for XRC resource files, support for wxWidgets 2.8.x and GHC 6.10, and preliminary support for Cabal and Hackage. cabal2doap 0.1. Greg Heartsfield [17]announced the [18]release of [19]Cabal2doap, which generates Description of a Project (DOAP) XML/RDF data representing a Haskell project. This should make it possible for semantic web project aggregation sites to find and index Haskell projects. Jobs Jane Street is hiring functional programmers. Yaron Minsky [20]reminded everyone that [21]Jane Street is still hiring! Jane Street now has over 30 OCaml developers, and is actively looking to hire more in Tokyo, London and New York. PhD, postdoc, and engineering positions at HATS. CFP [22]announced the availability of 10 PhD, postdoc, and engineering positions within the HATS project (Highly Adaptable and Trustworthy Software using Formal Models), a new Integrated Project funded by the European Union, within the programme "Future and Emerging Technologies" (FET). The goal of HATS is a tool-supported framework and formal methodology for the development of long-lived and trustworthy software systems. Hypothetical Haskell job in New York. Tony Hannan [23]asked how many would be interested in applying to a hypothetical Haskell job in New York, assuming his boss can be convinced to use Haskell. Blog noise [24]Haskell news from the [25]blogosphere. * Lennart Augustsson (augustss): [26]LLVM arithmetic. * GHC / OpenSPARC Project: [27]Bootstrapping 6. * Patrick Perry: [28]New Haskell BLAS bindings!. * Clemens Fruhwirth: [29]Liskell standalone. * The GHC Team: [30]Benchmarking recent improvements in parallelism. * Galois, Inc: [31]Tech Talk: OpenTheory: Package Management for Higher Order Logic Theories. * Eric Kow (kowey): [32]fold diagram revisited?. * GHC / OpenSPARC Project: [33]Bootstrapping 5. * Lennart Augustsson (augustss): [34]LLVM. * Sebastian Fischer: [35]Monadic and Queue-Based Tree Search. * Philip Wadler: [36]Well-typed programs can't be blamed. * GHC / OpenSPARC Project: [37]Bootstrapping 4. * Manuel M T Chakravarty: [38]GPU Kernels as Data-Parallel Array Computations in Haskell.. * GHC / OpenSPARC Project: [39]Bootstrapping 3. * Tom Schrijvers: [40]Monadic Constraint Programming. * Conal Elliott: [41]Another angle on functional future values. * >>> Greg Heartsfield: [42]Cabal2doap. * Christopher Lane Hinson: [43]MaybeArrow?. * GHC / OpenSPARC Project: [44]Bootstrapping 2. * Darcs: [45]darcs 2.2.0pre2 ready for testing!. * Alson Kemp: [46]Sad about Import Cycles. * GHC / OpenSPARC Project: [47]Bootstrapping. * gamr7: [48]Accessing Recursive Haskell Data Structures from C/Python. Quotes of the Week * jml: A wise man once said, "the program isn't debugged until the last user is dead". * pumpkin: OMG I <3 RECORD SYNTAX * Olathe: <Olathe> > floor (1.0/0.0) <lambdabot> 179769... <Olathe> But you can see that Haskell can calculate the maximum Integer. * lilac: <drdozer> gha! I'm drowning in the haskell number hierarchy again <lilac> drdozer: magic 8-ball says 'add calls to fromIntegral' * monopoly: do not exit IO. go directly to the REPL, do not pass any parameters or continuations. * EvilTerran: [on category theory] the same place of nightmares that spawned zygohistomorphic prepromorphisms :P About the Haskell Weekly News New editions are posted to [49]the Haskell mailing list as well as to [50]the Haskell Sequence and [51]Planet Haskell. [52]RSS is also available, and headlines appear on [53]haskell.org. To help create new editions of this newsletter, please see the information on [54]how to contribute. Send stories to byorgey at cis dot upenn dot edu. The darcs repository is available at darcs get [55]http://code.haskell.org/~byorgey/code/hwn/ . References 1. http://haskell.org/ 2. http://article.gmane.org/gmane.comp.lang.haskell.cafe/50195 3. http://quantile95.com/2009/01/09/new-haskell-blas-bindings/ 4. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/blas 5. http://article.gmane.org/gmane.comp.lang.haskell.cafe/50170 6. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xhb 7. http://xcb.freedesktop.org/ 8. http://article.gmane.org/gmane.comp.lang.haskell.cafe/50169 9. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/TCache 10. http://article.gmane.org/gmane.comp.lang.haskell.cafe/50119 11. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/haskell-src-exts 12. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hlint 13. http://article.gmane.org/gmane.comp.lang.haskell.cafe/49956 14. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bytestring-trie 15. http://article.gmane.org/gmane.comp.lang.haskell.cafe/49898 16. http://wxhaskell.sourceforge.net/ 17. http://article.gmane.org/gmane.comp.lang.haskell.general/16718 18. http://blog.gregheartsfield.com/2009/01/04/cabal2doap/ 19. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/cabal2doap 20. http://article.gmane.org/gmane.comp.lang.haskell.general/16741 21. http://janestreet.com/ 22. http://article.gmane.org/gmane.comp.lang.haskell.general/16736 23. http://article.gmane.org/gmane.comp.lang.haskell.cafe/50015 24. http://planet.haskell.org/ 25. http://haskell.org/haskellwiki/Blog_articles 26. http://augustss.blogspot.com/2009/01/llvm-arithmetic-so-we-want-to-compute-… 27. http://ghcsparc.blogspot.com/2009/01/bootstrapping-6.html 28. http://quantile95.com/2009/01/09/new-haskell-blas-bindings/ 29. http://blog.clemens.endorphin.org/2009/01/liskell-standalone.html 30. http://ghcmutterings.wordpress.com/2009/01/09/46/ 31. http://www.galois.com/blog/2009/01/08/tech-talk-opentheory-package-manageme… 32. http://koweycode.blogspot.com/2009/01/fold-diagram-revisited.html 33. http://ghcsparc.blogspot.com/2009/01/bootstrapping-5.html 34. http://augustss.blogspot.com/2009/01/llvm-llvm-low-level-virtual-machine-is… 35. http://www-ps.informatik.uni-kiel.de/~sebf/projects/monad-vs-queue.html 36. http://wadler.blogspot.com/2009/01/well-typed-programs-cant-be-blamed.html 37. http://ghcsparc.blogspot.com/2009/01/bootstrapping-4.html 38. http://justtesting.org/post/68696876 39. http://ghcsparc.blogspot.com/2009/01/bootstrapping-3.html 40. http://tomschrijvers.blogspot.com/2009/01/monadic-constraint-programming.ht… 41. http://conal.net/blog/posts/another-angle-on-functional-future-values/ 42. http://blog.gregheartsfield.com/2009/01/04/cabal2doap/ 43. http://blog.downstairspeople.org/2009/01/04/maybearrow/ 44. http://ghcsparc.blogspot.com/2009/01/test-run-of-patched-ghc-6.html 45. http://blog.darcs.net/2009/01/darcs-220pre2-ready-for-testing.html 46. http://www.alsonkemp.com/haskell/sad-about-import-cycles/ 47. http://ghcsparc.blogspot.com/2009/01/building.html 48. http://gamr7.com/blog/?p=66 49. http://www.haskell.org/mailman/listinfo/haskell 50. http://sequence.complete.org/ 51. http://planet.haskell.org/ 52. http://sequence.complete.org/node/feed 53. http://haskell.org/ 54. http://haskell.org/haskellwiki/HWN 55. http://code.haskell.org/~byorgey/code/hwn/

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Jane Street is hiring functional programmers
by Yaron Minsky 09 Jan '09

09 Jan '09

Greetings all. I just wanted to remind people that Jane Street is still hiring. Despite the problems besetting much of the financial industry, we have grown strongly in the last few years in our people, our technology, the scope of our business and its profitability. We now have over 30 OCaml developers, and we are actively looking to hire more in Tokyo, London and New York. For someone who cares about functional programming, Jane Street is an interesting place to consider. Jane Street has invested deeply in OCaml, to the point where we now have the largest team of OCaml programmers in any industrial setting, and probably the world's largest OCaml codebase--almost a million lines. We really believe in functional programming, and use OCaml for everything from research to systems adminstration to trading systems. The atmosphere is informal and intellectual, with a focus on learning. The work itself is deeply challenging, and you get to see the practical impact of your efforts in quick and dramatic terms. Jane Street is also a small enough place that people have the freedom to get involved in many different areas of the business. Unlike many financial firms, software and technology are considered a core part of what we do, not some segmented-off cost center that the people who run the business don't think about. Jane Street is a place where people really care about the quality of the software, to the point that several of the most senior members of the firm, who do not have technology backgrounds, nonetheless review critical portions of the codebase before they can go into production. If you'd like to learn more, here are some links. First, here's a paper I wrote for the Monad Reader: http://www.haskell.org/sitewiki/images/0/03/TMR-Issue7.pdf We also have a technically-oriented blog: http://ocaml.janestreet.com For a (recruiting-oriented) overview of Jane Street, here's the firm website: http://janestreet.com If you're interested, send me a resume and cover letter. y

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