Richard Eisenberg @RaeHaskell
Type system grease monkey and language designer for Haskell and OCaml. I want type systems to save us from software errors. Works at @JaneStreetGroup. He/him richarde.dev Philadelphia, PA, USA Joined November 2019-
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I'm excited to be part of a panel on careers in PL at PLMW at @poplconf. But I'm weighing whether or not to stick around for all of POPL. I'd love to -- but I went 2 for 2 in 2022 for getting covid at conferences. Will there be e.g. a testing protocol? That would go a long way.
Back after a hiatus for Haskell Symposium submission (rejected 😢) and then holidays.
Back after a hiatus for Haskell Symposium submission (rejected 😢) and then holidays.
Simon Peyton Jones’ work to deliver outstanding computing education is recognised in the Queen’s Birthday Honours ahead of the Platinum Jubilee celebrations. 👏🎊 Read more: computingatschool.org.uk/news-and-blogs… #PlatinumJubilee #Congratulations #OBE
I'm writing a paper for Haskell Symposium, using @kosmikus's lhs2TeX for code formatting. My editor: VSCode. And, amazing to say, HLS is finding type errors in the middle of my paper. Very cool!
Apologies to my loyal fans, but this week got away from me -- no @tweagio video. :( I'll make it up with 2 next week! :) One will use criterion to run microbenchmarks on the Wordle code. Don't worry if you haven't kept up on the (long) series -- it will be relevant regardless!
Alert: The GHC Steering Committee is contemplating a proposal that will cause some breakage. We want community feedback to inform whether we should proceed. Read all about it -- and share your thoughts -- at Discourse: discourse.haskell.org/t/feedback-req…
Pleased to share that the videos from the WITS workshop (co-organized with @agdakx and part of @poplconf) are now online, including the keynote by @jonmsterling. Thanks to Apoorv Ingle, the tireless video chair! youtube.com/playlist?list=…
The @haskellfound is seeking a new Executive Director. Come join us and help shape the future of #Haskell! We're eager to get moving, and so the deadline is Feb 22. Spread the word! haskell.foundation/careers/ed.html
This is my favorite tweet in a while.
Excited to make a new series of videos, about a Haskell program to find good Wordle guesses. Should be a good companion example to Haskell learners and an opportunity to learn about data representation choices and optimization for Haskell intermediates. youtu.be/2djr6ZxQ8VA
Haskell weekly is such an important part of the Haskell ecosystem. Hard to believe it's run by a single, passionate person for such a long time. Thank you for all of your hard work @taylorfausak and congratulations on hitting 300 issues!
Haskell weekly is such an important part of the Haskell ecosystem. Hard to believe it's run by a single, passionate person for such a long time. Thank you for all of your hard work @taylorfausak and congratulations on hitting 300 issues!
Want to contribute to GHC? I came across a ticket today that should be nicely addressable by a newcomer. Hint: look in libraries/template-haskell/Language/Haskell/TH/Ppr.hs gitlab.haskell.org/ghc/ghc/-/issu…
We can imagine an operator like `Tuple Int Bool Double` that reduces to `(Int, Bool, Double)` by inferring its arity. But can we do it for unboxed tuples, with their varying representations? @RaeHaskell shows us how, with a couple of twists and turns: youtu.be/kGyiH5Nup-Y
In a fit of evening productivity, I wrote two GHC proposals tonight: github.com/ghc-proposals/… on a new opt-in syntax for lists and tuples that avoids punning, and github.com/ghc-proposals/… on dropping support for -XNoPolyKinds. Video on -XNoPolyKinds due out on Thursday.

Dmitrii Kovanikov @ChShersh
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Graham Hutton @haskellhutt
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Tweag @tweagio
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Edward Kmett @kmett
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Matt Parsons @mattoflambda
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Alexis King @lexi_lambda
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Shriram Krishnamurthi... @ShriramKMurthi
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naomi (forgetful func... @fixedpointfae
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Yaron (Ron) Minsky @yminsky
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Herbert Weissenbaeck @weissenbaeck_h
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Global Script @gslanguages
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rick ᝍ 🌧 @rickyraz_
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SE4FP Workshop @se4fp_workshop
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Lewis Carson @LewisCarso29563
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Francisca @afranciscaf98
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exoteric @exooteric
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Nick @nikkotanns
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xecarlox @xecarlox94
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Prisen.co @prisencotech
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Adithya Kumar @adiovk
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Upwork Watch: Jobs, B... @pitch_pilot
157 Followers 100 Following 🚀 Win more on Upwork with real-time job alerts & AI-powered proposals. Stay ahead, apply faster, and land more gigs. Try free now! https://t.co/JzxjBljLW8
Will Lynas @will_lynas_9
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Recce 🔭🍌 @crypto__recce
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One Happy Fellow @onehappyfellow
2K Followers 686 Following calmly weaving caml code;; programmers are wizards who forgot their magic;; lack of type safety always comes with a price;; head of @typememetics
Anant @Anant34188571
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Joy Gao @joygao
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Dmitrii Kovanikov @ChShersh
42K Followers 204 Following Dysfunctional Programming account #1. Senior SWE at Bloomberg. I write C++ for money. ex-Haskell, ex-OCaml. All opinions are my own.
Graham Hutton @haskellhutt
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Satnam Singh @satnam6502
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Tweag @tweagio
6K Followers 244 Following The Open Source Programming Office (OSPO) of @ModusCreate. Improving the craft of software engineering.
Talia Ringer 💚 @TaliaRinger
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Edward Kmett @kmett
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Matt Parsons @mattoflambda
5K Followers 523 Following Haskell and SQL. Team Lead for Backend Developer UX at @mercury. I wrote @prodhaskell so you can get a Haskell job!
Alexis King @lexi_lambda
12K Followers 22 Following computers can be understood • DMs open (but responsiveness varies) • she/her, ⚢
Shriram Krishnamurthi... @ShriramKMurthi
21K Followers 4K Following @BrownCSDept/@BrownUniversity • @BootstrapWorld • @PyretLang • @racketlang • Unreasonably excited about compsci, education, cycling, cricket, human experience.
gabby @GabriellaG439
15K Followers 76 Following Author of @dhall_lang, https://t.co/YzieN4kyo2, and principal engineer at @Mercury I'm a midwife to the hidden beauty in everything she/her 🏳️⚧️
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Joachim Breitner @nomeata
2K Followers 1 Following Has a thing for abstraction. Haskeller, Computer Scientist. Dances tango, swing and blues. Stand-up comedian and paraglider. 🦣 https://t.co/9Sjz02h8dL
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Stephen Diehl @smdiehl
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Yao Li @lastland0
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Max ⊶ New @maxsnew@... @ProfMaxNew
1K Followers 208 Following Professor of Computer Science @umich, tweets about programming language design, semantics and ̶c̶a̶t̶e̶g̶o̶r̶y̶ ̶t̶h̶e̶o̶r̶y̶ profunctors. Louisiana ex-pat ⚜️
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Noam Zilberstein @NZComplete
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Vitaly Bragilevsky @VBragilevsky
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@[email protected] @donsbot
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Jon Purdy @evincarofautumn
402 Followers 164 Following they • PL designer/developer/theorist • math • code • science • Haskell
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Haskell @HaskellOrg
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Nicolas Wu @nicolasgwu
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Edward Kmett @edwardkmett
434 Followers 229 Following This account was created due to an incident on Feb 13th, 2021. I'm mothballing it for now. Follow @kmett.
joomy @joomy
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Idris Language @idrislang
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285 Followers 254 Following Talk to me about Haskell, GHC, general CS or my trumpet Mastodon: @[email protected]
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300 Followers 289 Following Cohomology enthusiast. I've seen rings you people wouldn't believe.
Chris Smith @cdsmithus
615 Followers 154 Following Software developer and amateur (but published!) ring theorist. Volunteer K-12 math/CS teacher. Haskell enthusiast. He/him.
Loris D'Antoni @lorisdanto
8K Followers 769 Following A Professor @ucsd_cse. Visiting Academic @AWScloud. Helps people write programs they can trust.
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274 Followers 422 Following
Morabijn @morabbin
804 Followers 735 Following Haskeller working on @fbinfer @ Meta; Galois Co-Founder; Ex-Head of SCB Strats; Husband; Dad; vintage geek. Views my own. He/him. #BlackLivesMatter
sclv @sclv
2K Followers 3K Following "more important than being able to do mathematics is to be sure the applications are meaningful." - e. bishop • https://t.co/45nJUN3IqD
Csaba Hruska @csaba_hruska
1K Followers 686 Following I'm into compilers and pure functional programming. I'm doing Research & Development. (GHC, LLVM, ASM, pointer analysis, optimization) FYI: Csaba ⟦ˈt͡ʃɒbɒ⟧
Gaël Deest @gael_deest
153 Followers 244 Following Software engineer (Haskell and all-things-lambda addict. PhD on FPGA accelerator design. Secretly hates computers. Openly loathes (most) user interfaces.
Andrew Boardman @myShoggoth
588 Followers 472 Following Director of Engineering at @getwellrewarded Former ED of @haskellfound My own opinions and not necessarily those of my employer.
José Manuel Calderó... @josecalderon
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Justin Lê @mstk
2K Followers 1K Following jle / mstksg / Lê Anh Khoa: Computational Science PhD, Physics BS, Haskeller & amateur musician; he / him
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227 Followers 345 Following Once graphical programmer, now FP addict, #nix #Haskell. #skydiving #running. Former apolitical, privileged, learning about far left. He/Him.
Bind The Gap @bind_the_gap
662 Followers 2 Following 🚅 Change here for the #FP line 📰 Modern and cosy #Haskell and FP monthly newspaper 💙 by @kowainik @chshersh @vrom911