# Issue 148 :: Haskell Weekly

**URL:** <https://discourse.haskell.org/t/issue-148-haskell-weekly/358>\
**Category:** Links\
**Created:** [February 28, 2019, 3:02pm UTC](https://discourse.haskell.org/t/issue-148-haskell-weekly/358 "2019-02-28T15:02:49Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![taylorfausak](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/taylorfausak/32/54_2.png) [@taylorfausak](https://discourse.haskell.org/u/taylorfausak)\
**Post date:** [February 28, 2019, 3:02pm UTC](https://discourse.haskell.org/t/issue-148-haskell-weekly/358/1 "2019-02-28T15:02:49Z")

</div>

> **[Issue 148](https://haskellweekly.news/issue/148.html)**
>
> News about the Haskell programming language from 2019-02-28.

Welcome to another issue of Haskell Weekly!  
[Haskell](https://www.haskell.org) is a safe, purely functional programming language with a fast, concurrent runtime.  
This is a weekly summary of what’s going on in its community.

## Featured

- [A Secret Weapon for Startups — Functional Programming?](https://www.ramanan.com/personal-blog/2019/2/25/functional-programming-and-venture-capital) by Ramanan Raghavendran

- [Adding a GHC language extension](https://blog.shaynefletcher.org/2019/02/adding-ghc-language-extension.html) by Shayne Fletcher

- [Announcing Aelve Codesearch, an online grep over package repositories](https://forum.aelve.com/t/announcing-aelve-codesearch-an-online-grep-over-package-repositories/44) by Artyom Kazak

- [Creating Blog with Hakyll, Nix and Deploying on Amazon EC2](https://deptype.com/posts/2019-02-21-create-blog-nix-hakyll-aws.html)

- [Dead simple Haskell Travis settings for cabal and stack](https://chshersh.github.io/posts/2019-02-25-haskell-travis) by Dmitrii Kovanikov

- [Haskell.Org Participating in GSoC 2019](https://summer.haskell.org/news/2019-02-26-accepted-for-gsoc.html) by Jasper Van der Jeugt

- [Local Capabilities with MTL](http://discourse.haskell.org/t/local-capabilities-with-mtl/231) by Sam Halliday

- [QuickCheck, Hedgehog, Validity](https://www.fpcomplete.com/blog/quickcheck-hedgehog-validity) by Tom Sydney Kerckhove

- [Welcome to the Haskell Discourse!](http://discourse.haskell.org/t/welcome-to-the-haskell-discourse/7)

- [What the heck is polymorphism?](https://dev.to/jvanbruegge/what-the-heck-is-polymorphism-nmh) by Jan van Brügge

## Jobs

- [Software engineer at ITProTV in Gainesville](https://www.linkedin.com/jobs/view/1104480045/)

- [Software Developer at VLC in Brisbane](https://vlc.bamboohr.com/jobs/view.php?id=41)

## In brief

- [A Brief Introduction to the λ-Calculus (Part 2)](https://whatthefunctional.wordpress.com/2019/02/21/a-brief-introduction-to-the-%CE%BB-calculus-part-2/)
- [A Case Study in Dhall for Package Configuration](http://blog.vmchale.com/article/cpkg-announce)
- [An EDSL for hard working IT programmers](https://www.schoolofhaskell.com/user/agocorona/EDSL-for-hard-working-IT-programmers)
- [Another IDEa: Haskell and IntelliJ!](https://mmhaskell.com/blog/2019/2/25/another-idea-haskell-and-intellij)
- [Dhall Survey Results](http://www.haskellforall.com/2019/02/dhall-survey-results-2019-2019.html)
- [Gudni: A Haskell-centric Fast Accurate Rasterizer](https://np.reddit.com/r/haskell/comments/atsngn/gudni_a_haskellcentric_fast_accurate_rasterizer/)
- [Idle Speculation on Lenses and Zippers](https://medium.com/@cdsmithus/idle-speculation-on-lenses-and-zippers-a5d2746678e4)
- [Is Haskell really the language of geniuses and academia?](https://habr.com/en/post/441350/)
- [Megaparsec tutorial from IH book](https://markkarpov.com/megaparsec/megaparsec.html)
- [Practical Web Development with Haskell](https://www.apress.com/de/book/9781484237380)
- [PureScript compiler release v0.12.3](https://discourse.purescript.org/t/purescript-compiler-release-v0-12-3/654)
- [Return of the Clocks](https://typeclasses.com/news/2019-02-clocks-again)
- [The campaign for my book “Functional Design and Architecture”](https://np.reddit.com/r/haskell/comments/avaxda/the_campaign_for_my_book_functional_design_and/)
- [What’s the right way to QuickCheck floating-point routines?](https://byorgey.wordpress.com/2019/02/24/whats-the-right-way-to-quickcheck-floating-point-routines/)

## Package of the week

This week’s package of the week is [Waargonaut](https://hackage.haskell.org/package/waargonaut-0.6.1.0), a library for flexible, precise, and efficient JSON decoding/encoding.

## Call for participation

- [exercism/haskell: Bank Account: Hard to guess approach to exercise](https://github.com/exercism/haskell/issues/799)
- [purebred: Replace `selectedItemHelper` with over and L.listModify](https://github.com/purebred-mua/purebred/issues/258)

## Events

### North America

- 2019-02-28 in Raleigh, NC, USA by Raleigh Haskell Meetup: [(hack . yack)](https://www.meetup.com/Raleigh-Haskell-Meetup/events/nsfsnqyzdblc/)
- 2019-02-28 in Portland, OR, USA by Portland Functional Programming Study Group: [PDX Func Theory Track - Logic and Proof](https://www.meetup.com/Portland-Functional-Programming-Study-Group/events/mpwwbqyzdbkc/)
- 2019-02-28 in Chicago, IL, USA by The Project Euler Sprint: [Project Euler Sprint](https://www.meetup.com/Project-Euler-Sprint/events/ngwzxmyzdblc/)
- 2019-02-28 in Calgary, AL, Canada by Functional Programmers YYC: [Unconf (YYC.FP)](https://www.meetup.com/Functional-Programmers-YYC/events/tqfjpqyzdbsb/)
- 2019-03-02 in Boston, MA, USA by Weekly Functional Programming Meetup: [Hang out + short talk (A Whirlwind Tour of Type Theory by Ian Denhardt)](https://www.meetup.com/Weekly-Functional-Programming-Meetup/events/vdlnqpyzfbdb/)
- 2019-03-04 in Irvine, CA by Orange Combinator - Functional Programming In OC: [Combinating - The Weekly Function](https://www.meetup.com/orange-combinator/events/lxvjrpyzfbgb/)
- 2019-03-04 in Portland, OR, USA by Portland Functional Programming Study Group: [PDX Func Practice Track - Parallel and Concurrent Programming in Haskell](https://www.meetup.com/Portland-Functional-Programming-Study-Group/events/rtfghqyzfbgb/)
- 2019-03-05 in Santa Monica, CA, USA by Santa Monica Haskell Users Group: [Haskell Hack Night](https://www.meetup.com/santa-monica-haskell/events/259283993/)
- 2019-03-05 in Madison, WI, USA by Haskallywags: [TypeScript](https://www.meetup.com/Haskallywags/events/258731416/)
- 2019-03-06 in Austin, TX, USA by Austin Haskell Users Group: [Haskell Beginner-Friendly Lab](https://www.meetup.com/ATX-Haskell/events/dsldppyzfbjb/)
- 2019-03-06 in Washington, DC, USA by The Joy of Programming Meetup: [Next Round (TBD)](https://www.meetup.com/Joy-of-Programming-DC/events/xpnxbpyzfbjb/)
- 2019-03-06 in Bellevue, WA, USA by SeaLang: [Exploring the type system of ReasonML/OCaml](https://www.meetup.com/SeaLang/events/255357257/)
- 2019-03-06 in New York, NY, USA by New York Haskell Users Group: [Implementing In-memory Caches in Haskell with Jasper Van Der Jeugt](https://www.meetup.com/NY-Haskell/events/259189477/)
- 2019-03-07 in Raleigh, NC, USA by Raleigh Haskell Meetup: [(hack . yack)](https://www.meetup.com/Raleigh-Haskell-Meetup/events/nsfsnqyzfbkb/)
- 2019-03-07 in Las Vegas, NV, USA by Las Vegas Functional Programming User Group: [Functional Programming Meetup](https://www.meetup.com/las-vegas-functional-programming/events/jkznkqyzfbkb/)
- 2019-03-27 in Toronto, ON, Canada by Toronto Haskell Meetup: [Haskell Meetup: Lightning Talks and Hack Night 2](https://www.meetup.com/meetup-group-evRITRtT/events/259124679/)

### Europe

- 2019-02-28 in Zürich, Switzerland by HaskellerZ: [Zurich Friends of Haskell - General Assembly](https://www.meetup.com/HaskellerZ/events/258665750/)
- 2019-02-28 in Zürich, Switzerland by HaskellerZ: [Artem Chirkin - Experimenting with Constraints](https://www.meetup.com/HaskellerZ/events/258850066/)
- 2019-02-28 in Son, Netherlands by F#P Eindhoven: [Introduction to Fable and an applied use-case using F# and FP techniques](https://www.meetup.com/F-P-Eindhoven/events/258893932/)
- 2019-02-28 in Göteborg, Sweden by Got.λ - Göteborg Functional Programming Group: [All about monads, and Phocate: A monadic parser in and for PHP](https://www.meetup.com/got-lambda/events/258446674/)
- 2019-02-28 in London, United Kingdom by London Functional Programmers: [LDN Functionals Meetup #16 - Hosted by Revolut, E14 4HD](https://www.meetup.com/London-Functionals/events/258555586/)
- 2019-03-02 in Berlin, Germany by Study Haskell: [Weekly Haskell-studying session](https://www.meetup.com/Study-Haskell/events/gwtsqqyzfbdb/)
- 2019-03-02 in Amsterdam, Netherlands by FP AMS: [Talks & Drinks with John de Goes](https://www.meetup.com/fp-ams/events/258492088/)
- 2019-03-04 in București, Romania by Bucharest FP: [Bucharest FP #44 — Haskell Book Study Group 05](https://www.meetup.com/bucharestfp/events/259325521/)
- 2019-03-04 in Delft, Netherlands by Delft Haskell Study Group: [Haskell Study Session #2](https://www.meetup.com/Delft-Haskell-Study-Group/events/259291636/)
- 2019-03-06 in Berlin, Germany by Berlin Haskell Users Group: [Haskell Wednesday](https://www.meetup.com/berlinhug/events/pvpwqpyzfbjb/)
- 2019-03-06 in Amsterdam, Netherlands by FP AMS: [Category theory study group: Yoneda Embedding](https://www.meetup.com/fp-ams/events/258696139/)
- 2019-03-06 in Berlin, Germany by Friendly Functional Programming Meetup Berlin: [Friendly Functional Programming](https://www.meetup.com/Friendly-Functional-Programming-Meetup-Berlin/events/wtnkmqyzfbjb/)
- 2019-03-06 in Brighton, United Kingdom by Functional Brighton: [Double bill: tagless final, monad transformers](https://www.meetup.com/Functional-Brighton/events/258704210/)

### Asia

- 2019-02-28 in Tōkyō-to, Japan by Tokyo Scala Developers: [Types, Scala & Haskell!](https://www.meetup.com/Tokyo-Scala-Developers/events/258586177/)
- 2019-03-04 in Hong Kong Island, Hong Kong by Hong Kong Functional Programming: [Come and meet the IOHK Rust team!](https://www.meetup.com/HK-Functional-programming/events/259326860/)
- 2019-03-06 in Singapore, Singapore by HASKELL.SG: [March Singapore Haskell Meetup](https://www.meetup.com/HASKELL-SG/events/258491197/)
- 2019-03-06 in Singapore, Singapore by University of Glasgow: [Functional Programming Day 2019](https://www.facebook.com/UoGSingapore/photos/a.368638043207103/2523953804342172/)

### Oceania

- 2019-02-28 in Melbourne, Australia by Melbourne Haskell Users Group: [Melbourne Haskell Users Group Meetup](https://www.meetup.com/Melbourne-Haskell-Users-Group/events/qfptslyzdblc/)