November 2012 - Haskell

Call for Papers: PLACES'13 -- Programming Language Approaches to Concurrency and Communication-cEntric Software
by Wim Vanderbauwhede 12 Nov '12

12 Nov '12

CALL FOR PAPERS PLACES'13 Programming Language Approaches to Concurrency and Communication-cEntric Software 23rd March 2013, Rome, Italy (affiliated with ETAPS 2013) http://places13.di.fc.ul.pt/ Applications today are built using numerous interacting services; soon off-the-shelf CPUs will host thousands of cores, and sensor networks will be composed from a large number of processing units. Many applications need to make effective use of thousands of computing nodes. At some level of granularity, computation in such systems is inherently concurrent and communication-centred. To exploit and harness the richness of this computing environment, designers and programmers will utilise a rich variety of programming paradigms, depending on the shape of the data and control flow. Plausible candidates for such paradigms include structured imperative concurrent programming, stream-based programming, concurrent functions with asynchronous message passing, higher-order types for events, and the use of types for communications and data structures (such as session types and linear types), to name but a few. Combinations of these abstractions will be used even in a single application, and the runtime environment needs to ensure seamless execution without relying on differences in available resources such as the number of cores. The development of effective programming methodologies for the coming computing paradigm demands exploration and understanding of a wide variety of ideas and techniques. This workshop aims to offer a forum where researchers from different fields exchange new ideas on one of the central challenges for programming in the near future, the development of programming methodologies and infrastructures where concurrency and distribution are the norm rather than a marginal concern. ** Topics of Interest ** Submissions are invited in the general area of foundations of programming languages for concurrency, communication and distribution. Specific topics include: * language design and implementations for communications and/or concurrency, * session types, * concurrent data types, * concurrent objects and actors, * multicore programming, * use of message passing in systems software, * interface languages for communication and distribution, * program analysis, * web services, * novel programming methodologies for sensor networks, * integration of sequential and concurrent programming, * high-level programming abstractions for security concerns in concurrent, distributed programming, * runtime architectures for concurrency, * scalability and/or resource allocations. Papers are welcome which present novel and valuable ideas as well as experiences. ** Submission Guidelines ** Authors should submit a title and an abstract by Wednesday 14th December 2012. Papers of up to *five pages* in length should be submitted in PDF format by Wednesday 21st December 2012 using the EasyChair proceedings template available at: http://www.easychair.org/easychair.zip Abstracts and papers should be submitted using EasyChair: http://www.easychair.org/conferences/?conf=places2013 Preliminary proceedings will be available at the workshop. The post proceeding will be published as an EPTCS volume. Note that, as we accept short papers, extended versions of the accepted works could be also submitted elsewhere. Enquiries can be sent to the PC co-chairs. ** Important Dates ** Abstract (title & abstract): 14th December 2012 Paper Submission (up to 5 pages): 21st December 2012 Paper Notification: 23rd January 2012 Final versions of papers: 4th February 2012 ** Program Committee ** Alastair Beresford, University of Cambridge, UK Viviana Bono, Universita di Torino, Italy Alastair Donaldson, Imperial College London, UK Dan Ghica, University of Birmingham, UK Joshua Guttman, Worcester Polytechnic Institute, MA, US Thomas Hildebrandt, University of Copenhagen, Denmark Paul Keir, Codeplay Ltd, UK Hans-Wolfgang Loidl, Heriot-Watt University, UK Conor McBride, University of Strathclyde, UK Jeremy Singer, University of Glasgow, UK Sven-Bodo Scholz, Heriot-Watt University, UK Nikhil Swamy, Microsoft Research, US Wim Vanderbauwhede (co-chair), University of Glasgow, UK Hugo Torres Vieira, Universidade de Lisboa, Portugal Nobuko Yoshida (co-chair), Imperial College London, UK ** Organizing Committee ** Alastair Beresford, University of Cambridge, UK Kohei Honda, Queen Mary, University of London, UK Simon Gay, University of Glasgow, UK Alan Mycroft, University of Cambridge, UK Vasco Vasconcelos, University of Lisbon, Portugal Nobuko Yoshida, Imperial College London, UK

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HaXml
by Michael Mossey 11 Nov '12

11 Nov '12

I'm fairly beginnerish. I'm trying to use HaXml with MusicXML. I got a hold of the MusicXML DTD and ran DtdToHaskell. It generated a file which I then attempted to import to a test program. I got a few compiler errors about duplicate definitions and ambiguous definitions. It seemed pretty clear that these resulted from names in the DTD clashing with each other or with existing names, and I just tweaked some of those. Those compile errors went away. However, I have a new set of compiler errors. I'm getting a similar error hundreds of times, namely "Couldn't match expected type Text.XML.HaXml.Types.QName with actual type "String". Poking around, I found this webpage describing an issue with a change to HaXml that happened after version 1.20.2: < http://stackoverflow.com/questions/7501037/how-to-make-haxml-and-drift-work… > This web page suggests that I need to install HaXml-1.20.2 to use it with the current version of the DtdToHaskell utility. Note that I already have the latest version of HaXml installed, so I would need to replace it with an older version. I tried running cabal install HaXml-1.20.2 but got "Ambiguous model name 'Prelude': it was found in multiple packages: base haskel98-2.0.0.1" This sounds like something fundamental about the Haskell packages but I don't know enough to know what to do. Mike

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haskell.org committee: Call for nominations
by Jason Dagit 09 Nov '12

09 Nov '12

Dear Haskellers, The second year of the haskell.org committee is drawing to a close and it is therefore time to seek replacements for those members whose term is expiring. This year one member has a term ending, Ganesh Sittampalam. Ganesh has been an excellent contributor and the rest of the committee would like to thank him for his excellent service. To nominate yourself, please send an e-mail to committee at haskell.org by 30 November 2012. As usual, retiring members are eligible to re-nominate themselves. Please feel free to include any information about yourself that you think will help us to make a decision. Being a member of the committee does not require a significant amount of time, but committee members should aim to be responsive during discussions when the committee is called upon to make a decision. More details about the committee's roles and responsibilities are on http://www.haskell.org/haskellwiki/Haskell.org_committee If you have any questions about the process, please feel free to e-mail us at committee at haskell.org or to contact one of us individually. Regards, Jason On behalf of the haskell.org committee

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Haskell Weekly News: Issue 250
by Daniel Santa Cruz 08 Nov '12

08 Nov '12

Welcome to issue 250 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of October 28 to November 3, 2012. Quotes of the Week * Cale: A list is a bit like a loop which hasn't happened yet. This operation is similar to "how do I make the 5th iteration of my loop do something different from the others?" * broombs: Why are there multiple packages for EitherT? broombs: edwardk: which is the better one? edwardk: broombs: either And today, we have our first quote submited via twitter! Thank you @gersei for sending this one in. If you'd like to submit quotes via twitter, add @HWNQuotes to your tweet. * @kmett:We now generate pretty core but have ugly code. Top Reddit Stories * Cartesian Closed Comic #15: Iteratees Domain: ro-che.info, Score: 75, Comments: 2 On Reddit: [1] http://goo.gl/9NpD2 Original: [2] http://goo.gl/SB7HZ * Are there any, or is there interest in starting, an online Haskell course like the Scala course on Coursera? Domain: class.coursera.org, Score: 69, Comments: 16 On Reddit: [3] http://goo.gl/UzBdF Original: [4] http://goo.gl/1Zzct * Why is this simple text processing program so much slower than in dynamic languages? Domain: honza.ca, Score: 65, Comments: 189 On Reddit: [5] http://goo.gl/jW5ow Original: [6] http://goo.gl/pPzIb * Fast Code Nation: The Bright Side of High-Level Languages Domain: bos.github.com, Score: 59, Comments: 11 On Reddit: [7] http://goo.gl/KmBRt Original: [8] http://goo.gl/jm9s7 * Fay slides Domain: fay-lang.org, Score: 56, Comments: 42 On Reddit: [9] http://goo.gl/0UM4T Original: [10] http://goo.gl/h8iZE * Data.Records: extensible records using the latest GHC features Domain: github.com, Score: 55, Comments: 44 On Reddit: [11] http://goo.gl/64wUj Original: [12] http://goo.gl/XVdB2 * Why Cabal Has Problems Domain: softwaresimply.blogspot.com, Score: 50, Comments: 41 On Reddit: [13] http://goo.gl/ZX1Ia Original: [14] http://goo.gl/TgnOG * The cabal/hackage situation, and what you can do about it Domain: alpmestan.com, Score: 49, Comments: 14 On Reddit: [15] http://goo.gl/jEGIj Original: [16] http://goo.gl/EK2DB * Brian O'Sullivan's favorite bug in GHC Domain: twitter.com, Score: 48, Comments: 12 On Reddit: [17] http://goo.gl/nMjeK Original: [18] http://goo.gl/odPH4 * Haskell for all: "Hello, core!" Domain: haskellforall.com, Score: 45, Comments: 6 On Reddit: [19] http://goo.gl/qXRd2 Original: [20] http://goo.gl/9cBeo * Michael Snoyman: Yesod, AngularJS and Fay Domain: yesodweb.com, Score: 43, Comments: 26 On Reddit: [21] http://goo.gl/8yfVd Original: [22] http://goo.gl/0xtPP * Cellular automata as comonads Domain: blog.sigfpe.com, Score: 41, Comments: 10 On Reddit: [23] http://goo.gl/73nr2 Original: [24] http://goo.gl/vH4TK * pipes-2.5: Faster and slimmer Domain: haskellforall.com, Score: 41, Comments: 56 On Reddit: [25] http://goo.gl/wtUZg Original: [26] http://goo.gl/rKR2D Top StackOverflow Questions * Writing cojoin or cobind for n-dimensional grid type votes: 41, answers: 3 Read on SO: [27] http://goo.gl/qbz7z * Why not be dependently typed? votes: 39, answers: 3 Read on SO: [28] http://goo.gl/1TSVh * Concrete example showing that monads are not closed under composition (with proof)? votes: 32, answers: 4 Read on SO: [29] http://goo.gl/sys7F * Monad Transformers vs Passing parameters to functions votes: 24, answers: 1 Read on SO: [30] http://goo.gl/UpU57 * Why is there no IO transformer in Haskell? votes: 16, answers: 2 Read on SO: [31] http://goo.gl/04Xc7 * Is it possible to make GHC optimize (deforest) generic functions such as catamorphisms? votes: 16, answers: 1 Read on SO: [32] http://goo.gl/f4ZlU * Is it possible to use irrefutable tilde (`~`) patterns in lambda expressions? votes: 14, answers: 1 Read on SO: [33] http://goo.gl/BmGY0 * Can Scala's Cake Pattern be implemented in Haskell? votes: 13, answers: 2 Read on SO: [34] http://goo.gl/QiMfg * Confused by the meaning of the 'Alternative' type class and its relationship to other type classes votes: 13, answers: 5 Read on SO: [35] http://goo.gl/RXNuV * How to add fields that only cache something to ADT? votes: 13, answers: 0 Read on SO: [36] http://goo.gl/FjLlX * Type algebra and Knuth's up arrow notation votes: 13, answers: 1 Read on SO: [37] http://goo.gl/kyYIn Until next time, Daniel Santa Cruz References 1. http://ro-che.info/ccc/15.html 2. http://www.reddit.com/r/haskell/comments/11t7ru/cartesian_closed_comic_15_i… 3. https://class.coursera.org/course/progfun 4. http://www.reddit.com/r/haskell/comments/12865b/are_there_any_or_is_there_i… 5. http://honza.ca/2012/10/haskell-strings 6. http://www.reddit.com/r/haskell/comments/120h6i/why_is_this_simple_text_pro… 7. http://bos.github.com/reaktor-dev-day-2012/reaktor-talk-slides.html 8. http://www.reddit.com/r/haskell/comments/11sl47/fast_code_nation_the_bright… 9. http://fay-lang.org/fay-talk/ 10. http://www.reddit.com/r/haskell/comments/11yrpi/fay_slides/ 11. https://github.com/jonsterling/Data.Records 12. http://www.reddit.com/r/haskell/comments/12835b/datarecords_extensible_reco… 13. http://softwaresimply.blogspot.com/2012/11/why-cabal-has-problems.html 14. http://www.reddit.com/r/haskell/comments/12hbzb/why_cabal_has_problems/ 15. http://alpmestan.com/posts/2012-11-02-cabal-hackage-what-you-can-do-about-i… 16. http://www.reddit.com/r/haskell/comments/12ijs7/the_cabalhackage_situation_… 17. https://twitter.com/bos31337/status/116372971509121025 18. http://www.reddit.com/r/haskell/comments/127emo/brian_osullivans_favorite_b… 19. http://www.haskellforall.com/2012/10/hello-core.html 20. http://www.reddit.com/r/haskell/comments/11vuzz/haskell_for_all_hello_core/ 21. http://www.yesodweb.com/blog/2012/10/yesod-fay-js 22. http://www.reddit.com/r/haskell/comments/12ct6p/michael_snoyman_yesod_angul… 23. http://blog.sigfpe.com/2006/12/evaluating-cellular-automata-is.html 24. http://www.reddit.com/r/haskell/comments/11o6nu/cellular_automata_as_comona… 25. http://www.haskellforall.com/2012/10/pipes-25-faster-and-slimmer.html 26. http://www.reddit.com/r/haskell/comments/12gikh/pipes25_faster_and_slimmer/ 27. http://stackoverflow.com/questions/12963733/writing-cojoin-or-cobind-for-n-… 28. http://stackoverflow.com/questions/12961651/why-not-be-dependently-typed 29. http://stackoverflow.com/questions/13034229/concrete-example-showing-that-m… 30. http://stackoverflow.com/questions/12968351/monad-transformers-vs-passing-p… 31. http://stackoverflow.com/questions/13056663/why-is-there-no-io-transformer-… 32. http://stackoverflow.com/questions/13099203/is-it-possible-to-make-ghc-opti… 33. http://stackoverflow.com/questions/13185632/is-it-possible-to-use-irrefutab… 34. http://stackoverflow.com/questions/12947176/can-scalas-cake-pattern-be-impl… 35. http://stackoverflow.com/questions/13080606/confused-by-the-meaning-of-the-… 36. http://stackoverflow.com/questions/13098448/how-to-add-fields-that-only-cac… 37. http://stackoverflow.com/questions/13170803/type-algebra-and-knuths-up-arro…

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Announce: Haskell Platform 2012.4.0.0
by Mark Lentczner 06 Nov '12

06 Nov '12

I'm pleased to announce that Haskell Platform 2012.4.0.0<http://www.haskell.org/platform/index.html#2012.4.0.0>is now available. This release contains three new packages to the platform: - async-2.0.1.3<http://lambda.haskell.org/platform/doc/current/packages/async-2.0.1.3/doc/h…> - split-0.2.1.1<http://lambda.haskell.org/platform/doc/current/packages/split-0.2.1.1/doc/h…> - vector-0.10.0.1<http://vector-0.10.0.1http://lambda.haskell.org/platform/doc/current/packag…> The remainder of the changes are small updates to the versions of GHC (now 7.4.2) and several other packages. Installers for Windows <http://www.haskell.org/platform/windows.html>, Mac OS X <http://www.haskell.org/platform/mac.html>, and the source tar ball<http://www.haskell.org/platform/linux.html>are all now available from the site. Linux distribution packages should be available shortly. On behalf of the Haskell Platform team<http://trac.haskell.org/haskell-platform/wiki/Members> , - Mark "mzero" Lentczner, Release Manager

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Call for Papers (ICTAC 2013)
by Huibiao Zhu 05 Nov '12

05 Nov '12

*************************************************************** ICTAC 2013 10th International Colloquium on Theoretical Aspects of Computing *** Call For Papers *** September 4-6, 2013 Shanghai, China http://ictac2013.ecnu.edu.cn/ *************************************************************** ICTAC 2013 is the 10th International Colloquium on Theoretical Aspects of Computing, the latest in a series founded by the International Institute for Software Technology of the United Nations University (UNU-IIST). ICTAC 2013 will bring together practitioners and researchers from academia, industry and government to present research and to exchange ideas and experience addressing challenges in both theoretical aspects of computing and in the exploitation of theory through methods and tools for system development. The other main purpose is to promote cooperation in research and education between participants and their institutions, from developing and industrial countries, as in the mandate of the United Nations University. THEMES AND TOPICS OF PAPERS ICTAC 2013 calls for regular research papers on theories of computation and programming, foundations of software engineering, and on formal techniques in software design and verification; short papers on recent work or proposals of challenges in new programming paradigms such as Cyber-Physical Systems, Cloud Computing and Social Networks; and papers about tools that support formal techniques for software modeling, system design and verification. The topical areas of the conference include, but not limited to Automata theory and formal languages; Principles and semantics of programming languages; Theories of concurrency, mobility and reconfiguration; Logics and their applications; Software architectures and their models, refinement and verification; Relationship between software requirements, models and code; Program static and dynamic analysis and verification; Software specification, refinement, verification and testing; Model checking and theorem proving; Models of object and component systems; Coordination and feature interaction; Integration of theories, formal methods and tools for engineering computing systems; Service-oriented architectures: models and development methods; Models of concurrency, security, and mobility; Theory of distributed, grid and cloud computing; Real-time, embedded, hybrid and cyber-physical systems; Type and category theory in computer science; Models for learning and education; Case studies, theories, tools and experiments of verified systems; Domain-specific modeling and technology: examples, frameworks and experience. Challenges and foundations in the environmental modeling and monitoring, healthcare, and disaster management. PUBLICATION AND SUBMISSION As for the past editions, it is the plan that the proceedings of ICTAC 2013 will be published by Springer in the series Lecture Notes in Computer Science (LNCS) and will be available at the colloquium. A special issue of a journal with extended version of selected papers from ICTAC 2013 is under negotiation. Submissions to the colloquium must not have been published or be concurrently considered for publication elsewhere. All submissions will be judged on the basis of originality, contribution to the field, technical and presentation quality, and relevance to the conference. Submissions can be Regular Papers, Short Papers or Tool Papers. Short papers can present recent or ongoing work or discuss new ideas which are at an early stage of development and have not been thoroughly evaluated yet. Papers should be written in English. Regular Papers should not exceed 18 pages and Short Papers and tool papers should be between 5 and 10 pages in LNCS format (see http://www.springer.de/comp/lncs/authors.html for details). Papers must be submitted at http://www.easychair.org/conferences/?conf=ictac2013. Short papers and tool papers must contain clear reference to the background theories and techniques; and a tool paper must further provide a link to a webpage that contains a tutorial and demo of the tool. All queries should be sent to the e-mail address ictac2013(a)sei.ecnu.edu.cn. IMPORTANT DATES Paper submission deadline: 8 March 2013 Paper Accept/Reject Notification: 26 Apr 2013 Final paper submission: 17 May 2013 Conference dates: 4 --- 6 September 2013 ASSOCIATED EVENTS Festschrift Symposium in Honor of Prof. He Jifeng: 01-03 September 2013 Summer School on Software Engineering: 26-30 August 2013 CONFERENCE CHAIRS Zhou Chaochen, Software Institute, Chinese Academy of Sciences Peter Haddawy, UNU-IIST, Macau SAR, China Bill Roscoe, University of Oxford, UK PROGRAMME CHAIRS Zhiming Liu, UNU-IIST, Macau SAR, China Jim Woodcock, University of York, UK Huibiao Zhu, East China Normal University PROGRAMME COMMITTEE Farhad Arbab (CWI and Leiden University, The Netherlands) Michael Butler (University of Southampton, UK) Ana Cavalcanti (University of York, UK) Zhenbang Chen (National University of Defense Technology, China) Van Hung Dang (University of Engineering and Technology, Vietnam) Thao Dang (VERIMAG, France) David Deharbe (Universidade Federal do Rio Grande do Norte, Brasil) Jinsong Dong (National University of Singapore, Singapore) Meenakshi Dsouza (IIIT, India) Zhenhua Duan (Xidian University, China) John Fitzgerald (Newcastle University, UK) Martin Fr?nzle (Carl von Ossietzky Universit?t Oldenburg, Germany) Marcelo Frias (Instituto Tecnologico Buenos Aires, Argentina) Lindsay Groves (Victoria University of Wellington, New Zealand) Kim Guldstrand Larsen (Aalborg University, Denmark) Ian J. Hayes (University of Queensland, Australia) Zhenjiang Hu (NII, Japan) Lei Ju (Shandong University, China) Daniel Kroening (Oxford University, UK) Martin Leucker (University of Lübeck, Germany) Zhiming Liu (UNU-IIST, Macau SAR, China) Annabelle Mciver (Macquarie University, Australia) Dominique Mery (Université de Lorraine, France) Tobias Nipkow (Technische Universit?t München, Germany) Paritosh Pandya (TIFR, India) Jun Pang (University of Luxembourg, Luxembourg) Geguang Pu (East China Normal University, China) Shengchao Qin (Teesside University, UK) Zongyan Qiu (Peking University, China) Abhik Roychoudhury (National University of Singapore, Singapore) Augusto Sampaio (Federal university of Pernambuco, Brasil) Ondrej Sery (University of Lugano, Switzerland) Natarajan Shankar (SRI, US) Marjan Sirjani (Reykjavik University, Iceland) Andrzej Tarlecki (Warsaw University, Poland) Mark Utting (The University of Waikato, New Zealand) Tarmo Uustalu (Tallinn University of Technology, Estonia) Farn Wang (National Taiwan University, Taiwan) Burkhart Wolff (University Paris-Sud, France) Jim Woodcock (University of York, UK) Wang Yi (Uppsala University, Sweden) Naijun Zhan (Chinese Academy of Sciences, China) Jianjun Zhao (Shanghai Jiao Tong University, China) Jianhua Zhao (Nanjing University, China) Huibiao Zhu (East China Normal University, China)

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Call for Papers (ICTAC 2013)
by Huibiao Zhu 05 Nov '12

05 Nov '12

*************************************************************** ICTAC 2013 10th International Colloquium on Theoretical Aspects of Computing *** Call For Papers *** September 4-6, 2010 Shanghai, China http://ictac2013.ecnu.edu.cn/ *************************************************************** ICTAC 2013 is the 10th International Colloquium on Theoretical Aspects of Computing, the latest in a series founded by the International Institute for Software Technology of the United Nations University (UNU-IIST). ICTAC 2013 will bring together practitioners and researchers from academia, industry and government to present research and to exchange ideas and experience addressing challenges in both theoretical aspects of computing and in the exploitation of theory through methods and tools for system development. The other main purpose is to promote cooperation in research and education between participants and their institutions, from developing and industrial countries, as in the mandate of the United Nations University. THEMES AND TOPICS OF PAPERS ICTAC 2013 calls for regular research papers on theories of computation and programming, foundations of software engineering, and on formal techniques in software design and verification; short papers on recent work or proposals of challenges in new programming paradigms such as Cyber-Physical Systems, Cloud Computing and Social Networks; and papers about tools that support formal techniques for software modeling, system design and verification. The topical areas of the conference include, but not limited to Automata theory and formal languages; Principles and semantics of programming languages; Theories of concurrency, mobility and reconfiguration; Logics and their applications; Software architectures and their models, refinement and verification; Relationship between software requirements, models and code; Program static and dynamic analysis and verification; Software specification, refinement, verification and testing; Model checking and theorem proving; Models of object and component systems; Coordination and feature interaction; Integration of theories, formal methods and tools for engineering computing systems; Service-oriented architectures: models and development methods; Models of concurrency, security, and mobility; Theory of distributed, grid and cloud computing; Real-time, embedded, hybrid and cyber-physical systems; Type and category theory in computer science; Models for learning and education; Case studies, theories, tools and experiments of verified systems; Domain-specific modeling and technology: examples, frameworks and experience. Challenges and foundations in the environmental modeling and monitoring, healthcare, and disaster management. PUBLICATION AND SUBMISSION As for the past editions, it is the plan that the proceedings of ICTAC 2013 will be published by Springer in the series Lecture Notes in Computer Science (LNCS) and will be available at the colloquium. A special issue of a journal with extended version of selected papers from ICTAC 2013 is under negotiation. Submissions to the colloquium must not have been published or be concurrently considered for publication elsewhere. All submissions will be judged on the basis of originality, contribution to the field, technical and presentation quality, and relevance to the conference. Submissions can be Regular Papers, Short Papers or Tool Papers. Short papers can present recent or ongoing work or discuss new ideas which are at an early stage of development and have not been thoroughly evaluated yet. Papers should be written in English. Regular Papers should not exceed 18 pages and Short Papers and tool papers should be between 5 and 10 pages in LNCS format (see http://www.springer.de/comp/lncs/authors.html for details). Papers must be submitted at http://www.easychair.org/conferences/?conf=ictac2013. Short papers and tool papers must contain clear reference to the background theories and techniques; and a tool paper must further provide a link to a webpage that contains a tutorial and demo of the tool. All queries should be sent to the e-mail address ictac2013(a)sei.ecnu.edu.cn. IMPORTANT DATES Paper submission deadline: 8 March 2013 Paper Accept/Reject Notification: 26 Apr 2013 Final paper submission: 17 May 2013 Conference dates: 4 --- 6 September 2013 ASSOCIATED EVENTS Festschrift Symposium in Honor of Prof. He Jifeng: 01-03 September 2013 Summer School on Software Engineering: 26-30 August 2013 CONFERENCE CHAIRS Zhou Chaochen, Software Institute, Chinese Academy of Sciences Peter Haddawy, UNU-IIST, Macau SAR, China Bill Roscoe, University of Oxford, UK PROGRAMME CHAIRS Zhiming Liu, UNU-IIST, Macau SAR, China Jim Woodcock, University of York, UK Huibiao Zhu, East China Normal University PROGRAMME COMMITTEE Farhad Arbab (CWI and Leiden University, The Netherlands) Michael Butler (University of Southampton, UK) Ana Cavalcanti (University of York, UK) Zhenbang Chen (National University of Defense Technology, China) Van Hung Dang (University of Engineering and Technology, Vietnam) Thao Dang (VERIMAG, France) David Deharbe (Universidade Federal do Rio Grande do Norte, Brasil) Jinsong Dong (National University of Singapore, Singapore) Meenakshi Dsouza (IIIT, India) Zhenhua Duan (Xidian University, China) John Fitzgerald (Newcastle University, UK) Martin Fr?nzle (Carl von Ossietzky Universit?t Oldenburg, Germany) Marcelo Frias (Instituto Tecnologico Buenos Aires, Argentina) Lindsay Groves (Victoria University of Wellington, New Zealand) Kim Guldstrand Larsen (Aalborg University, Denmark) Ian J. Hayes (University of Queensland, Australia) Zhenjiang Hu (NII, Japan) Lei Ju (Shandong University, China) Daniel Kroening (Oxford University, UK) Martin Leucker (University of Lübeck, Germany) Zhiming Liu (UNU-IIST, Macau SAR, China) Annabelle Mciver (Macquarie University, Australia) Dominique Mery (Université de Lorraine, France) Tobias Nipkow (Technische Universit?t München, Germany) Paritosh Pandya (TIFR, India) Jun Pang (University of Luxembourg, Luxembourg) Geguang Pu (East China Normal University, China) Shengchao Qin (Teesside University, UK) Zongyan Qiu (Peking University, China) Abhik Roychoudhury (National University of Singapore, Singapore) Augusto Sampaio (Federal university of Pernambuco, Brasil) Ondrej Sery (University of Lugano, Switzerland) Natarajan Shankar (SRI, US) Marjan Sirjani (Reykjavik University, Iceland) Andrzej Tarlecki (Warsaw University, Poland) Mark Utting (The University of Waikato, New Zealand) Tarmo Uustalu (Tallinn University of Technology, Estonia) Farn Wang (National Taiwan University, Taiwan) Burkhart Wolff (University Paris-Sud, France) Jim Woodcock (University of York, UK) Wang Yi (Uppsala University, Sweden) Naijun Zhan (Chinese Academy of Sciences, China) Jianjun Zhao (Shanghai Jiao Tong University, China) Jianhua Zhao (Nanjing University, China) Huibiao Zhu (East China Normal University, China)

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ANNOUNCE: connection
by Vincent Hanquez 04 Nov '12

04 Nov '12

Hi Haskellers, I'm pleased to announce the release of connection. Connection is the pinnacle of most of my network related packages, and wrap together all the libraries needed to provide a easy and smooth experience to open client connection. It provides very simple access to SOCKS and TLS along with normal raw client socket. The goal is to hide most complicated settings either completely or re-expose them more simply, and provide safe defaults. repository: https://github.com/vincenthz/hs-connection hackage: http://hackage.haskell.org/package/connection Two simple examples (more can be find in the README on github): - opening a raw connection to www.example.com port 80: ctx <- initConnectionContext connectTo ctx $ ConnectionParams { connectionHostname = "www.example.com" , connectionPort = fromIntegral 80 , connectionUseSecure = Nothing , connectionUseSocks = Nothing } - opening a TLS connection to www.example.com port 443: ctx <- initConnectionContext connectTo ctx $ ConnectionParams { connectionHostname = "www.example.com" , connectionPort = fromIntegral 443 , connectionUseSecure = Just def , connectionUseSocks = Nothing } Enjoy, do reports bug and suggestions the usual way (on github issue tracker or by email) -- Vincent @vincenthz

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ANNOUNCE: vty-ui 1.6 released
by Jonathan Daugherty 03 Nov '12

03 Nov '12

Greetings, I'm happy to announce the release of version 1.6 of the vty-ui package. This release focuses on the following changes, some of which resolved long-standing GitHub issues: * Most uses of 'String' were replaced with 'Data.Text.Text'. * All built-in widgets are now capable of handling "wide" unicode characters (i.e., those requiring two terminal cells instead of one). Corresponding support code is provided for widget authors. * Support for GHC 7.6 (with the help of the 'vty' package). To realize support for wide characters, the text and text editing widgets were heavily refactored. As an added bonus, the text editor widget now uses a zipper under the hood[1]. This resulted in a signficant implementation and interface cleanup as well as added testability and more QuickCheck properties. You can obtain the release on Hackage or from the vty-ui project site at http://jtdaugherty.github.com/vty-ui/ The user's manual for 1.6 can be obtained at http://jtdaugherty.github.com/vty-ui/manuals/vty-ui-users-manual-1.6.pdf For a comprehensive list of API changes and other noteworthy trivia, see https://github.com/jtdaugherty/vty-ui/blob/master/CHANGELOG As always, check out the demo programs to get a feel for what the library can do. Thanks to Corey O'Connor, the maintainer of vty, for fixing bugs and exposing unicode character width functionality in vty. Thanks also to the folks on the GitHub issues who patiently waited for me to find time to do all of the work that went into this release. :) Enjoy! [1] Graphics.Vty.Widgets.TextZipper. -- Jonathan Daugherty Software Engineer Galois, Inc.

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Haskell Weekly News: Issue 249
by Daniel Santa Cruz 02 Nov '12

02 Nov '12

Welcome to issue 249 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of October 21 to October 27, 2012. Quotes of the Week * johnw: ah terminology, just when you think you know something, they redefined "know"... * lispy: The crappy thing about using partial fun*** Exception: Pattern match failure * shachaf: This Useful Information information brought to you by: ghci, and: the letter t * edwardk: i should have picked a better name to minimize confusion cmccann: huh. that's not something I ever expected to hear edwardk say * beaky: why did they settle on bitshiftrightassign (>>=) for monadic bind? Top Reddit Stories * Why is this simple text processing program so much slower than in dynamic languages? Domain: honza.ca, Score: 64, Comments: 189 On Reddit: [1] http://goo.gl/jW5ow Original: [2] http://goo.gl/pPzIb * Fay slides Domain: fay-lang.org, Score: 50, Comments: 42 On Reddit: [3] http://goo.gl/0UM4T Original: [4] http://goo.gl/h8iZE * Haskell for all: "Hello, core!" Domain: haskellforall.com, Score: 48, Comments: 6 On Reddit: [5] http://goo.gl/qXRd2 Original: [6] http://goo.gl/9cBeo * Haskell job opening at Functor AB Domain: alpmestan.com, Score: 35, Comments: 5 On Reddit: [7] http://goo.gl/hQmoa Original: [8] http://goo.gl/ASA9c * Enemy of the Mutable State Domain: ozonehouse.com, Score: 32, Comments: 10 On Reddit: [9] http://goo.gl/Wn3Yv Original: [10] http://goo.gl/r18by * Gloss(ish) and Fay: An Example Domain: zelda.designacourse.com, Score: 29, Comments: 7 On Reddit: [11] http://goo.gl/rtR9Y Original: [12] http://goo.gl/1cF0z * Yesodweb: Future work to improve the performance of Warp Domain: yesodweb.com, Score: 25, Comments: On Reddit: [13] http://goo.gl/0YF64 Original: [14] http://goo.gl/fq7ds * (a,b,c,d) as sugar for (a,(b,(c,d))) ? Domain: self.haskell, Score: 23, Comments: 37 On Reddit: [15] http://goo.gl/cc30R Original: [16] http://goo.gl/cc30R * Using Cloud Haskell in HPC Cluster Domain: malcodigo.blogspot.com.es, Score: 23, Comments: On Reddit: [17] http://goo.gl/LxmqY Original: [18] http://goo.gl/ycmZr * Haskell Platform 2012.4.0.0 release candidates Domain: trac.haskell.org, Score: 23, Comments: 3 On Reddit: [19] http://goo.gl/B4MNc Original: [20] http://goo.gl/Q4fHP Top StackOverflow Questions * Concrete example showing that monads are not closed under composition (with proof)? votes: 24, answers: 3 Read on SO: [21] http://goo.gl/sys7F * Why is there no IO transformer in Haskell? votes: 15, answers: 2 Read on SO: [22] http://goo.gl/04Xc7 * Is it possible to make GHC optimize (deforest) generic functions such as catamorphisms? votes: 14, answers: 1 Read on SO: [23] http://goo.gl/f4ZlU * Confused by the meaning of the 'Alternative' type class and its relationship to other type classes votes: 13, answers: 5 Read on SO: [24] http://goo.gl/RXNuV * How to add fields that only cache something to ADT? votes: 13, answers: 0 Read on SO: [25] http://goo.gl/FjLlX * How to reliably compare runtime of Haskell and C? votes: 10, answers: 1 Read on SO: [26] http://goo.gl/R7whA * Currying Product Types votes: 10, answers: 3 Read on SO: [27] http://goo.gl/7gxIS * Modular Program Design - Combining Monad Transformers in Monad Agnostic functions votes: 9, answers: 2 Read on SO: [28] http://goo.gl/8rh1B * Is there a nicer way to apply a function to both elements of a pair in a list than a list comprehension? votes: 9, answers: 3 Read on SO: [29] http://goo.gl/JF3p5 * How unpacking strict fields goes together with polymorphism? votes: 9, answers: 1 Read on SO: [30] http://goo.gl/58MuT Until next time, Daniel Santa Cruz References 1. http://honza.ca/2012/10/haskell-strings 2. http://www.reddit.com/r/haskell/comments/120h6i/why_is_this_simple_text_pro… 3. http://fay-lang.org/fay-talk/ 4. http://www.reddit.com/r/haskell/comments/11yrpi/fay_slides/ 5. http://www.haskellforall.com/2012/10/hello-core.html 6. http://www.reddit.com/r/haskell/comments/11vuzz/haskell_for_all_hello_core/ 7. http://alpmestan.com/posts/2012-10-23-haskell-job-opening-at-functor.html 8. http://www.reddit.com/r/haskell/comments/11yf8c/haskell_job_opening_at_func… 9. http://www.ozonehouse.com/mark/enemy/ 10. http://www.reddit.com/r/haskell/comments/125zt0/enemy_of_the_mutable_state/ 11. http://zelda.designacourse.com/codeworld.html 12. http://www.reddit.com/r/haskell/comments/126vdk/glossish_and_fay_an_example/ 13. http://www.yesodweb.com/blog/2012/10/future-work-warp 14. http://www.reddit.com/r/haskell/comments/11w7wv/yesodweb_future_work_to_imp… 15. http://www.reddit.com/r/haskell/comments/11ysa5/abcd_as_sugar_for_abcd/ 16. http://www.reddit.com/r/haskell/comments/11ysa5/abcd_as_sugar_for_abcd/ 17. http://malcodigo.blogspot.com.es/2012/10/using-cloud-haskell-in-hpc-cluster… 18. http://www.reddit.com/r/haskell/comments/122m6y/using_cloud_haskell_in_hpc_… 19. http://trac.haskell.org/haskell-platform/wiki/ReleaseCandidates 20. http://www.reddit.com/r/haskell/comments/124kje/haskell_platform_2012400_re… 21. http://stackoverflow.com/questions/13034229/concrete-example-showing-that-m… 22. http://stackoverflow.com/questions/13056663/why-is-there-no-io-transformer-… 23. http://stackoverflow.com/questions/13099203/is-it-possible-to-make-ghc-opti… 24. http://stackoverflow.com/questions/13080606/confused-by-the-meaning-of-the-… 25. http://stackoverflow.com/questions/13098448/how-to-add-fields-that-only-cac… 26. http://stackoverflow.com/questions/13009728/how-to-reliably-compare-runtime… 27. http://stackoverflow.com/questions/13080074/currying-product-types 28. http://stackoverflow.com/questions/13007123/modular-program-design-combinin… 29. http://stackoverflow.com/questions/13022720/is-there-a-nicer-way-to-apply-a… 30. http://stackoverflow.com/questions/13098375/how-unpacking-strict-fields-goe…

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