Andrew Healey @healeycodes
software engineer @vercel • I write about performance, compilers, puzzles, &more on my website • @recursecenter alum healeycodes.com 🇬🇧 Joined January 2019-
Tweets878
-
Followers1K
-
Following912
-
Likes4K
I added 𝚍𝚎𝚏𝚎𝚛 to the typescript compiler but along the way, I realised that what I want is different syntax for 𝚞𝚜𝚒𝚗𝚐 I just want to be able to write: 𝚞𝚜𝚒𝚗𝚐 𝚊𝚠𝚊𝚒𝚝 𝚜𝚎𝚖𝚊.𝚊𝚌𝚚𝚞𝚒𝚛𝚎() but you can't ↧ healeycodes.com/adding-defer-t…
0
1
12
863
0
View Details
@aaaronson do you count CHACHALACA?
two sum in lisp is actually really cute
healeycodes.com/a-tiny-compile… read all about it ⇩
new post! I wrote a tiny compiler that lowers simple kernel loops into explicit data-parallel code (lanes! masks!) ofc I made up a language to make the input/output code easier to read
healeycodes.com/building-a-run… hope you've been enjoying the C posts
quickjs is GOATed delightful API surface I was able to hack together a tiny runtime and event loop v quickly with it
read my notes and code snippets and thoughts healeycodes.com/building-a-she…
I built a tiny shell with C so I could learn more about syscalls and pipes great fun I found C to be quite suited for the task (fork, execvp) ... until I had to manage some string lifetime stuff 🥲
I suggested to my friend that writing a semaphore is fairly trivial but when I sat down to write one I was pretty humbled the edge cases around context cancellation are no joke more notes and my solution below down there ⇣
here's the full post about it healeycodes.com/solving-nyt-pi…
I also made a search-tree view that I used to debug the solver and get a feel for how it behaved with different optimizations
I built a solver for NYT's daily Pips puzzle I started with a brute-force search and optimized it to be 16× more efficient (by the number of nodes that need to be checked)
full post is up! healeycodes.com/compiling-a-fo…
I made a Forth compiler and VM with some visualizations for the tokenization->bytecode->VM steps here's the VM running (it's calculating the 10th Fib. sequence)
added sheep! they spawn when a chunk is created and then randomly walk around, avoiding obstacles (added very rudimentary 'entity system') added torch flicker (sine wave whose phase is derived from cell coords, scales with light level so cells nearer a torch flicker a bit more)
added stone, and ore veins (based on seed, and placed via biased random walk) added torches/BFS lighting (attenuates by 1 per cell, blocked by stone/ore) I'm cheating a bit with the lighting because there's just a dark overlay that is reduced by the lighting effect
playing around with an idea for an article called 'the algorithms behind minecraft' probably with everything in 2d I've just got terrain generation working in a canvas
Shu @shuding
59K Followers 2K Following @vercel. @v0, @nextjs, @aisdk, Satori, SWR. Don’t talk unless you can improve the silence.
Theo - t3.gg @theo
369K Followers 4K Following Full time CEO @t3dotchat. Part time YouTuber, investor, and developer
Rich Harris @Rich_Harris
95K Followers 2K Following Cheese fan. I work on @sveltejs at @vercel. Mostly posting at https://t.co/1DNxt27Pks
Steven ⬢ @styfle
6K Followers 2K Following 🐏 Software Shepherd @vercel 💚 Contributor to @nextjs @reactjs @nodejs @tc39 🤵 Husband & Father ✝️ Jesus lover
Tim @timneutkens
53K Followers 588 Following @vercel. co-author of @nextjs, MDX, Micro, and ncc. Opinions are my own.
Christopher Skillicor... @skllcrn
3K Followers 614 Following Thonk leader. Design @vercel. Started @wulkanocom.
Rasmus Andersson @rsms
91K Followers 3K Following Adventures in software & design. Founder of @playbit_, designer of Inter, @Figma, @Spotify. Eng & design @Facebook
sunil pai @threepointone
54K Followers 3K Following 🎈 Entscheidungsproblem. https://t.co/DISzWsXLdc forky mcforkface.
Adrian Bettridge-Wies... @lucidiguana
442 Followers 564 Following Three repetitive stress injuries in a trench coat. Director of Engineering @OptroHQ. Ex @vercel, @CortevaUs (as Granular). He/Him.
Delba @delba_oliveira
112K Followers 716 Following For the love of the craft. Claude Code • @ClaudeDevs @AnthropicAI | Prev. @Vercel
Jiachi @huozhi
5K Followers 925 Following Discovering another moment of creativity. building @v0 at @vercel, prev @nextjs
Bel Curcio @okbel
15K Followers 4K Following engineering & jack of all trades @vercel. ex: @mozilla @rga. The Web should be fast, secure* and beautiful
Anthony Shew @anthonysheww
6K Followers 350 Following Building Turborepo at @vercel | Used to play pro ⚾, now I’m a full-stack comedian.
luna @ImLunaHey
6K Followers 3K Following aussie living in london. staff engineer @depotdev prev: @AxiomFM @Canva @UnraidOfficial message me on signal @ImLunaHey.69
Lennzer @adithyalennzer
203 Followers 383 Following Backend Detective . The WAL always talks eventually
Mad Lad Brad 🏴�... @ban_journalists
127 Followers 1K Following NRX "Greater love hath no man than this, that a man lay down his life for his friends." ~ John 15:13
problemengineer @problemenginner
70 Followers 820 Following Future Problem-Solving Engineer Learning MERN Stack + Core CS Building and learning in public
Hasan Saikat @hasaansaikat
207 Followers 4K Following Software Engineer | Competitive Programmer | Interested in Algorithms, Backend, Data, Cloud & AI.
SHAO @EESHAOZHUO
28 Followers 737 Following
harshith @harshithl1777
35 Followers 89 Following swe @stripe | prev distributed systems @amazon, @hubspot | cs @uoft
Param @xparamt
259 Followers 286 Following cs @uwaterloo | vector search @databricks | prev deep research @glean, ads ml @quora
Andriy Tyurnikov 🔺 @AndriyTyurnikov
184 Followers 498 Following
Yashraj Zagade @Yashraj__tech
0 Followers 79 Following
lastcoder @gwangssu
24 Followers 2K Following
Joe Sluis @jyobo10
4K Followers 813 Following software engineer @microsoft | databasemaxxing | ssh https://t.co/stYIgDkOem
Manuel Simoni @msimoni
5K Followers 2K Following geek of programming languages, operating systems, and hypermedia platforms
mohajer @rejahom
13 Followers 3K Following
Mariano Bertoni @mariano_bertoni
173 Followers 5K Following
Melkey @MelkeyDev
30K Followers 684 Following builds @vercel. https://t.co/WGegciszSw . prev @twitch
gzyb @guaiziyaobai
0 Followers 36 Following
sidjeevan @sidjeevan
77 Followers 658 Following
apfs_mount @ApfsMount
9 Followers 1K Following
Adithya Nair @nairad1thya
72 Followers 587 Following emacs evangelist, hell bent on maximizing shareholder value.
aeesz4 @aepau2
80 Followers 597 Following
hrishikesh @0xubermenshh
9 Followers 843 Following
Eric Koome @koome_EE
11 Followers 383 Following
mehrdad aflak @AflakMehrdad
4 Followers 567 Following
Petr Skocik @pskocik
432 Followers 339 Following Interested in high performance software, systems, langs & making better tools. https://t.co/zsqhoMpOWB
Juan Milkah @JuanMilkah
54 Followers 858 Following Systems Software Engineer; Rust; [email protected]
cc314 @iiEwM7Q0xwz98SD
7 Followers 414 Following
Izacar @Izacargg
31 Followers 5K Following
8bit @supleed2
210 Followers 2K Following Embedded Software Engineer but also I would do more hardware and fgpa work
Shu @shuding
59K Followers 2K Following @vercel. @v0, @nextjs, @aisdk, Satori, SWR. Don’t talk unless you can improve the silence.
Lee Robinson @leerob
275K Followers 851 Following Model behavior @cursor_ai. Helping train useful models.
Jarred Sumner @jarredsumner
184K Followers 645 Following building @bunjavascript at @anthropicai. formerly: @stripe (twice) @thielfellowship. high school dropout. npm i -g bun
Evil Rabbit @evilrabbit_
42K Followers 666 Following @vercel Founding Designer / Creative Studio Director
Theo - t3.gg @theo
369K Followers 4K Following Full time CEO @t3dotchat. Part time YouTuber, investor, and developer
Malte Ubl @cramforce
50K Followers 921 Following Self-driving infrastructure @Vercel CTO. Immigrant 🇺🇸/🇩🇪/acc
Rich Harris @Rich_Harris
95K Followers 2K Following Cheese fan. I work on @sveltejs at @vercel. Mostly posting at https://t.co/1DNxt27Pks
Sarah Drasner @sarah_edo
301K Followers 3K Following Opinions my own Area Tech Lead, AI and Web Ecosystem @chrome, Formerly Sr. Director of Core Infra @google • O'Reilly Author • https://t.co/HhzYWwxYAH
Steven ⬢ @styfle
6K Followers 2K Following 🐏 Software Shepherd @vercel 💚 Contributor to @nextjs @reactjs @nodejs @tc39 🤵 Husband & Father ✝️ Jesus lover
Wes Bos @wesbos
437K Followers 2K Following Fullstack JS Dev ❯ @SyntaxFM ❯ https://t.co/6heZ7gZqg1 ❯ https://t.co/lOo3xh23G1 ❯ https://t.co/XYbxq79WBS ❯ Posts 🔥 Tips
Kath Korevec @simpsoka
32K Followers 616 Following Codex @OpenAI. Previously GitHub, Google, Vercel, Heroku.
George Hotz 🌑 @realGeorgeHotz
304K Followers 203 Following President @comma_ai. Founder @__tinygrad__
Tim @timneutkens
53K Followers 588 Following @vercel. co-author of @nextjs, MDX, Micro, and ncc. Opinions are my own.
Balázs Orbán @balazsorban44
5K Followers 334 Following created @authjs. previously @vercel, Next.js core, auth. work in progress. Tech Lead @ Unite AS. Arch BTW.
The Bush Archive @TheBushArchive
21K Followers 2K Following Media From The 43rd President Of The United States | not associated with George W. Bush. This is my only account.
malelivingspace.txt @redditspaces
85K Followers 2 Following The “best” of /r/malelivingspace and its extremely bizarre culture. Don’t expect good content. DMs open, may not always reply
luna @ImLunaHey
6K Followers 3K Following aussie living in london. staff engineer @depotdev prev: @AxiomFM @Canva @UnraidOfficial message me on signal @ImLunaHey.69
rxgamble @rxgamble
9K Followers 993 Following Gina Fiore. Walden v. Fiore. I wrote a book about my life and beating silly casino games. 📕 ADVANTAGE PLAYER: Blackjack, Backrooms, and Beginnings 📕 🇵🇸
David Bessis @davidbessis
21K Followers 463 Following Rogue mathematician. "The product of mathematics is clarity and understanding." — Bill Thurston https://t.co/l95RHuWz2S
lcamtuf @lcamtuf
40K Followers 500 Following Substack: https://t.co/yFvmNisGW3 Homepage: https://t.co/iFAXZxCO5H
NOBUNAGA🇯🇵🏯_... @japan_nobunaga
434K Followers 0 Following A samurai. Modern America. 120+ tales. 🌸 https://t.co/j4uLvybgjR 📖 Kindle out now ↓ #ad Amazon Associate
alex kershaw @kershaw_alex
58K Followers 10K Following NY Times best-selling author of The Bedford Boys, The Longest Winter, #TheLiberator etc. Public speaker, journalist and tour leader. Historian @WWIIMemorial
Jesse Genet @jessegenet
58K Followers 3K Following Startup builder (prev @lumi) turned family builder, currently vibe coding on my breaks from homeschooling four tots
breezeh @briscoepark
404K Followers 912 Following ⠀⠀⠀⠀9✞9⠀X⠀Photographer⠀#TeamTheBest ⠀⠀⠀ ⠀ ⠀ ⠀⠀ ⠀ ⠀⠀ ⠀⠀ ⠀ Space Cowboy ⠀ ⠀ ⠀⠀ ⠀ ⠀⠀ ⠀ ⠀ ⠀ ⠀
George Kahn @GeorgeKahn20
5K Followers 4K Following Outside, Nature, Photography with a real camera. Bird Watcher. Crafter of wood. My job title is Environmental Protection Specialist. AKA Tree Hugging Hippy.
where there are trees @sixepigraphes
930 Followers 772 Following meet me in the garden of Eden. bring a friend!
John GameDev ∞ @JohnMugen
3K Followers 623 Following Games, 𝙪𝙣𝙡𝙞𝙢𝙞𝙩𝙚𝙙 𝙜𝙖𝙢𝙚𝙨. But no games. 📍北海道 Working on 🟢 𝘖𝘳𝘣𝘭𝘪𝘯𝘴 Wishlist here: https://t.co/A7VdZKicRP
Einherjar_manga @didrikmagnusand
28K Followers 539 Following Creator of the Forsaken Gods fantasy setting and wargame. Check it out! Lore, rules, and different comic available now at my patreon, link underneath.
ヒライスン @hirai_sun_
2K Followers 441 Following 工作したり、Minecraftで装置作ったりしてます。 そういうの好きな人はフォローしてってね。 最近はゲーム作ったりもしてます。
Melkey @MelkeyDev
30K Followers 684 Following builds @vercel. https://t.co/WGegciszSw . prev @twitch
Evergreen Intel @vcdgf555
223K Followers 1K Following "Sharp-eyed aviation buff & flight tracker" ~ Brian Williams Cites: @UN @BBC @11thHour @newsweek @PopMech @thewarzonewire @TheAviationist @AirForceTimes She/her
PlayStation Nostalgia @PlayStalgiaX
202K Followers 1K Following Retro PlayStation Content | Co-host of the Retro PlayStation Podcast https://t.co/XqVYlZI7nD | Subscribe to the YouTube 👇
Robert A. Pape @ProfessorPape
174K Followers 3K Following UChicago Professor of Political Science directs Chicago Project on Security & Threats, author Bombing To Win and writes substack: The Escalation Trap.
3X Long Labubu @labubu_trader
71K Followers 3K Following Labubu long term investor/bag holder. Trading as a hobby. All of my tweets are just my personal opinions. Not financial advice
The Name of War @TheNameofWar
74K Followers 2 Following ‘Terror laid hold upon the man's soul and brought him into fear which knew no bound and tortured his mind, filling him with dread at the 𝐍𝐚𝐦𝐞 𝐨𝐟 𝐖𝐚𝐫.’
Vinh Nguyen @vinhnx
1K Followers 7K Following Learn by doing • Building VT Code, open source coding agent https://t.co/1ZsOIycYOz • Views are my own • Sponsor me: https://t.co/gvDx58bAs3
SGM Mike Vining @ Bla... @BlastingThrough
237K Followers 310 Following SGM Mike Vining, Delta Force, leadership, mountaineering, & life advice. Memoir "Blasting Through" currently under Pentagon review. Expected release, Nov. '26
space Ξ @spacexbt
18K Followers 592 Following mental illness from claude max plan + digital assets | prev @amd engineer
your pal @ normal sty... @haversacked
26K Followers 150 Following kelly | drawer | i love you 🦆 (no comms) (pls credit if using my work)
The Public Domain Rev... @PublicDomainRev
86K Followers 1K Following Online journal exploring works from the history of art, literature, and ideas. Featuring 300+ essays — ✍️ submissions welcome. Also 900+ prints in our shop!
Alexander's Cartograp... @cartographer_s
176K Followers 3K Following Writing a novel about Byzantine diplomacy | Get my book! https://t.co/brLZxZsrEp
WarRoom Archives @WarRoomArchives
292K Followers 16 Following Bringing you rare & exclusive war footage from global conflict zones. Real action, real stories documented for education, research, and historical preservation
Flag & Heraldry Posti... @flag_posting
4K Followers 3K Following I post flags and heraldry. Ran by: @cyning01 No posts are satire, maybe.
The English Oak Proje... @TheKentAcorn
47K Followers 285 Following Our Oak & Sweet Chestnut chums in our ancient bluebell woodland in the Weald of Kent. Also pictures and facts about trees https://t.co/BaeQ1qlstJ
T-90K @T_90AK
18K Followers 200 Following I post/write about Armored Vehicles. Mostly Soviet derived. Milblogger, you could say. Historic Soviet stuff, too.
Robot James 🤖🏖 @therobotjames
79K Followers 1K Following the people’s gambling champion https://t.co/Ne6Mr6Sg7q
melchieser @melchieser
14K Followers 639 Following 🇵🇭🇺🇸Filipino-American Reenactor. Interested in historical Asian military uniforms and traditional/vintage fashion.
Regional American Foo... @RegionalUSFood
182K Followers 5 Following Shining a light on regional dishes from around the US since 2021 — featured in @Salon, @SFExaminer, @AtlasObscura, and more. Curated by @bromf3. Submit via DM
Hunter SPX Thompson �... @CoorsLightCEO
12K Followers 3K Following northwestern mutual analyst , formerly sellside research— //Raytheon EMEA FP&A, Mercury Partners TMT alum, AntifaPERS (CIO)
Beany Tuesday @beanytuesday
58K Followers 485 Following cartoonist/heterosexual icon throw me a bone: https://t.co/EQuMoZW3LZ read my longer form stuff: https://t.co/ZsW2GolX7e
Benn Eifert 🥷🏴�... @bennpeifert
120K Followers 1K Following Hedge fund manager (volatility/derivatives), QVR. Personal account. Oathbreaker paladin and Nightreign princess bodyguard. Chief Investment Officer of Antifa.
Nick Lloyd @nick_lloy
5K Followers 591 Following Professor of Modern Warfare, King's College London | NYT & Sunday Times Bestselling Historian | Views My Own 🏴
jbulltard @jbulltard1
45K Followers 340 Following modeling trends and building better trades with options data
Maya Nedeljković Bat... @maya_ndljk
2K Followers 839 Following building a textbox component @linear ✨ 🐺 🌿
Tropical Cowboy of Da... @FlynonymousWX
26K Followers 98 Following Amateur Photog & 53d WRS/USAF Hurricane Hunter. Tweets, retweets & vague insinuations mostly mine and don’t represent DoW/DoD officially or unofficially
teo @teodorio
6K Followers 824 Following sailing through the cyberspace | big (data) guy | making data platforms for hundreds of millions of users at some cool companies
⚔︎ eve ⚔︎ @archivespirit
13K Followers 874 Following thinking / moving / healing 𖦹 digital diary of a philosophy student 𖦹You might like
Max Leiter
@maxleiter
6K Followers
Devon Govett
@devongovett
42K Followers
Steve Ruiz
@steveruizok
53K Followers
Ives van Hoorne
@CompuIves
26K Followers
Shruti Kapoor
@shrutikapoor08
25K Followers
Genny Dee
@gennydee
5K Followers
Daniel Rosenwasser
@drosenwasser
12K Followers
Grace Yun
@jueungraceyun
3K Followers
Gaspar Garcia
@gaspargarcia_
2K Followers
Christopher Skillicor...
@skllcrn
3K Followers
Jiachi
@huozhi
5K Followers
Rich Haines
@studio_hungry
3K Followers
kvg
@kevinvangundy
2K Followers
Amy Egan
@AmyAEgan
2K Followers
doug
@dglsparsons
579 Followers