- Haskell-Cafe - Haskell.org

Listing Yampa projects
by Ivan Perez 20 Mar '18

20 Mar '18

Dear all, I would like to facilitate transitioning to new versions of Yampa when there are breaking changes in the library. Also, when there is a proposal to deprecate a feature, this will help understand if it's still being used. I've created a github issue so that people can list their projects: https://github.com/ivanperez-keera/Yampa/issues/68 If you have a project, example, or paper that uses yampa and you want to keep it in a working state, please comment. If there's a project, maybe not your own, that you'd like to see working, please say so, even if there is no maintainer at the moment. Cheers Ivan

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Register for BayHac 2018
by Dan Burton 20 Mar '18

20 Mar '18

Registration form: https://goo.gl/forms/1gYlTQVNwPkKGgC02 <https://goo.gl/forms/1gYlTQVNwPkKGgC02> All attendees are requested to register for the event via the registration form. Registration form: https://goo.gl/forms/1gYlTQVNwPkKGgC02 Propose a talk or workshop: https://goo.gl/forms/TZbFNIZu4Q1dEh2g2 More info: https://wiki.haskell.org/BayHac2018 -- Dan Burton

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CfP: Workshop on Functional High-Performance Computing 2018 at ICFP
by Kei Davis 20 Mar '18

20 Mar '18

CALL FOR PAPERS FHPC 2018 7th ACM SIGPLAN Workshop on Functional High-Performance Computing September 29, 2018, St. Louis, Missouri, USA https://icfp18.sigplan.org/track/FHPC-2018-papers The 7th ACM SIGPLAN Workshop on Functional High-Performance Computing (FHPC’18) is being held as in previous years in conjunction with the International Conference on Functional Programming (ICFP’18) together with numerous other workshops/symposia, and as a first, colocated with Strange Loop, in St. Louis, Missouri, USA. Workshop Objectives The FHPC’18 workshop seeks to bring together researchers and practitioners exploring uses of functional (or more generally, declarative or high-level) programming systems or concepts in application domains where high performance is essential. The aim of the meeting is to enable sharing of results, experiences, and novel ideas about how high-level, declarative specifications of computationally challenging problems can serve as maintainable and portable code that approaches (or even exceeds) the performance of machine-oriented (low-level) imperative implementations. All aspects of performance-critical programming and parallel programming are in scope for the workshop, irrespective of hardware target. This includes both traditional large-scale distributed-memory scientific computing (HPC), as well as work targeting single node systems with SMPs, GPUs, FPGAs, or embedded processors. FHPC 2018 seeks to encourage a range of submissions, focusing on work in progress and facilitating early exchange of ideas and open discussion on innovative and/or emerging results. Original research, experience reports, case studies, and evaluations of programming systems are all welcome. Work on incorporation of functional programming concepts into more traditional (imperative) HPC applications is explicitly solicited. This year FHPC provides authors the opportunity to submit for evaluation any relevant artifacts that accompany their papers. The dissemination of artifacts promotes reproducibility, and enables authors to build on top of each others’ work, while it can also help to more unambiguously resolve questions about cases not considered by the original authors. For the purpose of FHPC, we plan to reward selected artifacts with additional presentation time in a dedicated slot during the workshop, for example, for demonstrating (i) reproducibility of results or (ii) practical usage of the framework (visualization, demos, etc). Artifact Details The artifact-evaluation committee (AEC) will accept any artifact that authors wish to submit. Obviously, the better the artifact is packaged, the more likely the AEC can actually work with it. We ask the authors to provide provide the title of the FHPC paper submission, together with three files: * a .pdf file that provides detailed instructions to the reviewers about how to install the artifact and what to look for in the evaluations * an archive .zip or .tar.gz containing the artifact * the submitted FHPC’18 paper (.pdf file) The artifact evaluation process is intended to encourage an open and constructive communication (via HotCRP) between (anonymous) reviewers and authors. Submission of an artifact does not constitute tacit permission to make its content public. AEC members will be instructed that they may not publicise any part of your artifact during or after completing evaluation, nor retain any part of it after evaluation. Thus, you are free to include models, data files, proprietary binaries, and similar items in your artifact. The AEC organisers strongly encourage you to anonymise any data files that you submit. Publication The proceedings of FHPC’18 will be published by the ACM Digital Press. Important Dates * Submission Deadline: June 8, 2018 anywhere on Earth. * Notification: early July (TBD) * Camera ready: late July (TBD) * Final version of proceedings available: Sept. 9 * FHPC 2018: Saturday Sept. 29, 2018. Official website, submissions, registration details https://icfp18.sigplan.org/track/FHPC-2018-papers Previous FHPC websites https://icfp17.sigplan.org/track/FHPC-2017-papers https://sites.google.com/site/fhpcworkshops/ ICFP and related workshops https://conf.researchr.org/home/icfp-2018 https://icfp18.sigplan.org Strange Loop https://www.thestrangeloop.com/ Questions or comments? fhpc18(a)gmail.com Kei Davis and Mike Rainey, co-chairs

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The Racket School 2018: Create your own language
by Sam Tobin-Hochstadt 20 Mar '18

20 Mar '18

The Racket School 2018: Create your own language 9–13 July • Salt Lake City The Racket team has spent over thirty years developing and refining a coherent intellectual tradition for studying and building programming languages. This year’s school will introduce participants to Racket’s framework for language-oriented programming, which the summer school faculty recently spelled out in a a cover article in the Communications of the ACM. [https://tinyurl.com/RacketCACM] Concretely, the 2018 Racket Summer School will cover the following topics: • the spectrum of programming languages; • modules and syntax, or languages as libraries; • DrRacket’s support for language-oriented programming; • a domain-specific language for adding types to languages; • tools and techniques for implementing notational conveniences; and • research challenges in language-oriented programming. If these topics intrigue you, attend the Racket Summer School: http://summer-school.racket-lang.org/2018/ This is not your run-of-the-mill summer school. We will do our best to make it exciting, entertaining, and useful to a broad spectrum of attendees, both academic and industrial. P.S. We will send you your first problem set in June, a month before the summer school to whet your appetite.

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Vim + literal Haskell + dollar symbols
by Ivan Perez 19 Mar '18

19 Mar '18

Hi cafe, The lhaskell edit mode for lhs2tex documents in vim gets confused when a dollar is used in code. This also makes the spellchecker ignore text paragraphs (until a matching $ is found). Where should this be reported? This list is named as maintainer in the Ubuntu package vim-runtime's lhaskell.vim syntax file: " Maintainer: Haskell Cafe mailinglist <haskell-cafe(a)haskell.org> " Original Author: Arthur van Leeuwen <arthurvl(a)cs.uu.nl> " Last Change: 2010 Apr 11 " Version: 1.04 Cheers Ivan

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vim syntax file
by Marcin Szamotulski 19 Mar '18

19 Mar '18

Hello, I am looking for the maintainer of the haskell vim syntax script. The header points to the haskell-cafe mailing lists. I added @Spell and @NoSpell groups so it's easier to spell check haskell in vim. I hope others will find it useful :) Best regards, Marcin Szamotulski

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S-REPLS 9: Call for talks
by Martin Berger 19 Mar '18

19 Mar '18

============================================================================ S-REPLS 9 (#srepls) South of England Regional Programming Language Seminar series Friday 25 May 2018, 10:00 - 19:00 University of Sussex, Brighton, Fulton building, Room A (FUL-A) http://users.sussex.ac.uk/~mfb21/srepls9 Call for talks ============================================================================ Overview S-REPLS is a regular, informal and friendly meeting for those based in the South of England with a professional interest - whether it be academic or commercial - in the semantics, implementation, and use of programming languages, and related areas. Attendance is free! Lunch and refreshments will be provided. Submitting a talk S-REPLS talks are typically 20-30 minutes long on any topic related to programming languages. We are currently requesting talk suggestions for S-REPLS 9 at the University of Sussex in Brighton. Submissions from industrial professionals and junior researchers (postdocs and students), as well as descriptions of work in progress, are especially welcome. Please email <M.F.Berger(a)sussex.ac.uk> with the title "S-REPLS 9 talk suggestion", a draft title, and an abstract by 17:00 on April 25th 2018.

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Scala: Type synonyms for implicits?
by Thomas Jakway 19 Mar '18

19 Mar '18

Posting this here since some of you are Scala programmers:https://stackoverflow.com/questions/49353695/type-synonyms-for-… A type-level question you won't encounter in Haskell.

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Call for Tutorial Proposals: ICFP 2018
by Lindsey Kuper 18 Mar '18

18 Mar '18

CALL FOR TUTORIAL PROPOSALS ICFP 2018 23rd ACM SIGPLAN International Conference on Functional Programming September 23-29, 2018 St. Louis, Missouri, United States http://conf.researchr.org/home/icfp-2018 The 23rd ACM SIGPLAN International Conference on Functional Programming will be held in St. Louis, Missouri, United States on September 23-29, 2018. ICFP provides a forum for researchers and developers to hear about the latest work on the design, implementations, principles, and uses of functional programming. Proposals are invited for tutorials to be presented during ICFP and its co-located workshops and other events. These tutorials are the successor to the CUFP tutorials from previous years, but we also welcome tutorials whose primary audience is researchers rather than practitioners. Tutorials may focus either on a concrete technology or on a theoretical or mathematical tool. Ideally, tutorials will have a concrete result, such as "Learn to do X with Y" rather than "Learn language Y". Tutorials may occur in parallel to both ICFP and its co-located workshops, from September 23 through September 29. Additionally, ICFP is co-located with Strange Loop this year, and this will be taken into account when scheduling tutorials. ---------------------------------------------------------------------- Submission details Deadline for submission: April 9, 2018 Notification of acceptance: April 16, 2018 Prospective organizers of tutorials are invited to submit a completed tutorial proposal form in plain text format to the ICFP 2018 workshop co-chairs (Christophe Scholliers and David Christiansen), via email to icfp-workshops-2018(a)googlegroups.com by April 9, 2018. Please note that this is a firm deadline. Organizers will be notified if their event proposal is accepted by April 16, 2018. The proposal form is available at: http://www.icfpconference.org/icfp2018-files/icfp18-tutorials-form.txt ---------------------------------------------------------------------- Selection committee The proposals will be evaluated by a committee comprising the following members of the ICFP 2018 organizing committee. Workshop Co-Chair: Christophe Scholliers (University of Ghent) Workshop Co-Chair: David Christiansen (Galois, Inc.) General Chair: Robby Findler (Northwestern University) Program Chair: Matthew Flatt (University of Utah) ---------------------------------------------------------------------- Further information Any queries should be addressed to the workshop co-chairs (Christophe Scholliers and David Christiansen), via email to icfp-workshops-2018(a)googlegroups.com

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[Announcement]: New release of ppTable: Pretty Print containers in a tabular format
by Guru Devanla 17 Mar '18

17 Mar '18

Hello Haskell-Cafe, I am happy to announce a new release of the ppTable library that lets you print records in list/vectors/maps in a pretty tabular format. https://hackage.haskell.org/package/pptable The new release also handles nested record structures by displaying the headers in a multi-hierarchical fashion. As they say in Python 'Flat is better than nested'. But for now, nested works too! I am willing and happy to get any feedback and suggestions on the library API and implementation itself. Thank you very much Guru

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