- Haskell-Cafe - Haskell.org

Open Position: Lecturer in Cybersecurity - University of Exeter
by Achim D. Brucker 29 Mar '19

29 Mar '19

Dear all, As part of the recent expansion of the Department of Computer Science (www.ex.ac.uk/computer-science/) at the University of Exeter, we are recruiting for a new Lecturer in Cybersecurity. You will join a growing department and will contribute to a new research focus in cybersecurity. This is a *unique* opportunity to join a new cybersecurity group as founding member and to influence its future development. Application in all areas of cybersecurity are welcome. Please apply by 4th of April 2019! See the full announcement and apply here: https://jobs.exeter.ac.uk/hrpr_webrecruitment/wrd/run/ETREC107GF.open?VACAN… Feel free to contact me for informal inquires about the post. Best, Achim -- Dr. Achim D. Brucker | Chair of Cybersecurity | University of Exeter https://www.brucker.ch | https://logicalhacking.com/blog @adbrucker | @logicalhacking

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a bug in Read instance of Int?
by Javran Cheng 29 Mar '19

29 Mar '19

Hi Cafe, Not sure if there are existing discussions, but I recently run into a problem with Read instance of Int: Prelude> :set -XTypeApplications Prelude> reads @Int "123." [(123,".")] Prelude> reads @Int "123.aaa" [(123,".aaa")] Prelude> reads @Int "123.456aaa" [] -- I expected this to be [(123,".456aaa")] Prelude> reads @Double "123.234aaa" [(123.234,"aaa")] Further investigation shows that [realNumber]( http://hackage.haskell.org/package/base/docs/src/GHC.Read.html#readNumber) is used for Read instance of Int. I think what happened is that when the leading parser input can be parsed as a floating number, it will do so and commit to that decision, making backtracking impossible. I do understand that Read just need to be able to parse whatever Show can produce and is not designed to deal with raw inputs, but this is still a surprising behavior to me. When I'm using Text.ParserCombinators.ReadP, I really appreciates it that I can use `readP_to_S read` to parse simple values (integers and floating points in particular), but it bothers me that parsing Int from "123.aaa" is fine but "123.1aa" will fail simply because the not-yet-consumed part of input is different. Javran

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art exhibition in London, April 2019
by Claude Heiland-Allen 29 Mar '19

29 Mar '19

Hi all, I have an art exhibition opening soon in London, UK. https://sonicelectronicsfestival.org/exhibition/ Featuring: - raytracing in curved space - badly-played tetris - generative techno - audiovisual sliding tile puzzle - interactive graph-directed IFS - zooming hybrid fractals Opening 11th April 2019 6pm, until 27th April, at Chalton Gallery, 96 Chalton Street, Camden, London NW1 1HJ, UK. Check website for times. Two of the works are realized with Haskell: - "Wedged" implements aesthetic constraints to search tetris packings - "Hybrids" uses a formula compiler to generate C code for rendering fractals Curated by Laura Netz. Supported using public funding by the National Lottery through Arts Council England. Claude -- https://mathr.co.uk

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Call for Tutorial Proposals: ICFP 2019
by Sam Tobin-Hochstadt 28 Mar '19

28 Mar '19

CALL FOR TUTORIAL PROPOSALS ICFP 2019 24th ACM SIGPLAN International Conference on Functional Programming August 18 - 23, 2019 Berlin, Germany https://icfp19.sigplan.org/ The 24th ACM SIGPLAN International Conference on Functional Programming will be held in Berlin, Germany on August 18-23, 2019. 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, lasting approximately 3 hours each, 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 after ICFP co-located with the associated workshops, from August 22 till August 23. ---------------------------------------------------------------------- Submission details Deadline for submission: May 10th, 2019 Notification of acceptance: May 17th, 2019 Prospective organizers of tutorials are invited to submit a completed tutorial proposal form in plain text format to the ICFP 2018 workshop co-chairs (Jennifer Hackett and Christophe Scholliers), via email to icfp-workshops-2019(a)googlegroups.com by May 10th, 2019. Please note that this is a firm deadline. Organizers will be notified if their event proposal is accepted by May 17, 2019. The proposal form is available at: http://www.icfpconference.org/icfp2019-files/icfp19-tutorials-form.txt ---------------------------------------------------------------------- Selection committee The proposals will be evaluated by a committee comprising the following members of the ICFP 2019 organizing committee. Tutorials Co-Chair: Jennifer Hackett (University of Nottingham) Tutorials Co-Chair: Christophe Scholliers (University of Ghent) General Chair: Derek Dreyer (MPI-SWS) Program Chair: François Pottier ( Inria, France) ---------------------------------------------------------------------- Further information Any queries should be addressed to the tutorial co-chairs ( Jennifer Hackett and Christophe Scholliers), via email to icfp-workshops-2019(a)googlegroups.com

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[TFPIE'19] Call for papers: Trends in Functional Programming in Education 2019, 11 June 2019, Vancouver, BC, CA
by Peter Achten 27 Mar '19

27 Mar '19

TFPIE 2019 Call for papers http://www.staff.science.uu.nl/~hage0101/tfpie2019/index.html (June 11th, University of British Columbia, Vancouver Canada, co-located with TFP 2019) TFPIE 2019 welcomes submissions describing techniques used in the classroom, tools used in and/or developed for the classroom and any creative use of functional programming (FP) to aid education in or outside Computer Science. Topics of interest include, but are not limited to: FP and beginning CS students FP and Computational Thinking FP and Artificial Intelligence FP in Robotics FP and Music Advanced FP for undergraduates FP in graduate education Engaging students in research using FP FP in Programming Languages FP in the high school curriculum FP as a stepping stone to other CS topics FP and Philosophy The pedagogy of teaching FP FP and e-learning: MOOCs, automated assessment etc. Best Lectures Ð more details below In addition to papers, we are requesting best lecture presentations. What's your best lecture topic in an FP related course? Do you have a fun way to present FP concepts to novices or perhaps an especially interesting presentation of a difficult topic? In either case, please consider sharing it. Best lecture topics will be selected for presentation based on a short abstract describing the lecture and its interest to TFPIE attendees. The length of the presentation should be comparable to that of a paper. On top of the lecture itself, the presentation can also provide commentary on the lecture. Submissions Potential presenters are invited to submit an extended abstract (4-6 pages) or a draft paper (up to 16 pages) in EPTCS style. The authors of accepted presentations will have their preprints and their slides made available on the workshop's website. Papers and abstracts can be submitted via easychair at the following link: https://easychair.org/conferences/?conf=tfpie2019 After the workshop, presenters will be invited to submit (a revised version of) their article for review. The PC will select the best articles that will be published in the Electronic Proceedings in Theoretical Computer Science (EPTCS). Articles rejected for presentation and extended abstracts will not be formally reviewed by the PC. Dates Submission deadline: May 14th 2019, Anywhere on Earth. Notification: May 20th Workshop: June 11th Submission for formal review: August 18th 2019, Anywhere on Earth Notification of full article: October 6th Camera ready: November 1st Program Committee Alex Gerdes - University of Gothenburg / Chalmers Jurriaan Hage (Chair) - Utrecht University Pieter Koopman - Radboud University, the Netherlands Elena Machkasova - University of Minnesota, Morris, USA Heather Miller - Carnegie Mellon University and EPFL Lausanne Prabhakar Ragde - University of Waterloo, Waterloo, Ontario, Canada Simon Thompson - University of Kent, UK Sharon Tuttle - Humboldt State University, Arcata, USA Note: information on TFP is available at https://www.tfp2019.org/index.html

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GSoC 2019 Student Applications now open
by Jasper Van der Jeugt 26 Mar '19

26 Mar '19

Hi all, We'd like to remind you that Google has opened student applications for Google Summer of Code 2019 [1]. Applications can be submitted through their dashboard [2]. If you are thinking of applying, there is a list of ideas submitted by our wonderful community [3] that can serve as inspiration. Of course, we also welcome other proposals! Please contact us [4] if you have any other question about the program. Warm regards Jasper Van der Jeugt on behalf of the Haskell.Org Committee [1]: https://summerofcode.withgoogle.com/ [2]: https://summerofcode.withgoogle.com/dashboard/ [3]: https://summer.haskell.org/ideas.html [4]: https://summer.haskell.org/contact.html

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Munich Haskell Meeting, 2019-03-27 @ 19:30
by Leah Neukirchen 25 Mar '19

25 Mar '19

Dear all, Next week, our monthly Munich Haskell Meeting will take place again on Wednesday, March 27 at Rumpler at 19h30. For details see here: http://muenchen.haskell.bayern/dates.html If you plan to join, please add yourself to this dudle so we can reserve enough seats! It is OK to add yourself to the dudle anonymously or pseudonymously. https://dudle.inf.tu-dresden.de/haskell-munich-mar-2019/ Everybody is welcome! cu & see you perhaps tomorrow at Munich Lambda meetup, -- Leah Neukirchen <leah(a)vuxu.org> http://leahneukirchen.org/

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sublime-haskell and hsdev
by Dennis Raddle 23 Mar '19

23 Mar '19

I'm just now learning Sublime Text 3 and trying to install sublime-haskell. It requires me to build hsdev, which I did with "cabal install hsdev". However the latter operation installs version > 3 of hsdev, while sublime-haskell requires < 3. So first question, how do I build and install an earlier version of hsdev? Also, I'm not clear if sublime-haskell is integrated with stack. I use stack for everything and I've been using Intero up til now in Emacs. The docs mention stack but seem to be clearer about cabal. D

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RedMonk ranks Haskell among top 20 most popular programming languages
by Jeffrey Brown 23 Mar '19

23 Mar '19

based on GitHub and StackOverflow. https://redmonk.com/sogrady/2019/03/20/language-rankings-1-19/ -- Jeff Brown | Jeffrey Benjamin Brown Website <https://msu.edu/~brown202/> | Facebook <https://www.facebook.com/mejeff.younotjeff> | LinkedIn <https://www.linkedin.com/in/jeffreybenjaminbrown>(spammy, so I often miss messages here) | Github <https://github.com/jeffreybenjaminbrown>

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More graph algorithms for Alga & Streaming JSON/YAML parser
by Shiv 22 Mar '19

22 Mar '19

Dear mentors, I am Shiv Pratap Singh from IIIT-Allahabad, India. I am currently in 4th year and Computer Science Undergraduate. After lot of brainstorming and carefully choosing the project idea based on my skills/expertise/experience, I am highly interested in project idea mentioned in Subject of the mail. As the proposal submission date is very close, I am keen to discuss the idea in depth so that various subtasks can be finalized .If any prior contribution/patch is requirement for applying, please let me know. Please mention some resources links in order to gain insights on project. Hoping to work together! Thank you, Shiv

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