Slava Egorov @mraleph Twitter profile

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Slava Egorov

@mraleph

2 years

me developing software (2022 edition)

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Slava Egorov

@mraleph

9 years

I would not recommend sending kisses emoji to people with Firefox OS

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Slava Egorov

@mraleph

12 years

No SciFi author foresaw this: we are building clans around languages we speak to the Machine.

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Slava Egorov

@mraleph

7 years

I think I had enough of blogging, now lets try something with a plot

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Slava Egorov

@mraleph

7 years

"Maybe you don't need Rust and WASM to speed up your JS"

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Slava Egorov

@mraleph

3 months

Today I am stepping into a new role on the @dart_lang team: I will be taking care of overall technical direction of the project as an uber-TL. Very excited to work across the whole Dart platform and together with my Flutter peers tackle all the challenges ahead of us.

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Slava Egorov

@mraleph

7 years

behold: the cleanest piece of JavaScript you have seen in your life

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Slava Egorov

@mraleph

10 years

"recent studies showed that humans are using only 15% of C++ features... it is also estimated that dolphins are capable of using 20% of C++"

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Slava Egorov

@mraleph

9 years

latency numbers every programmer should know

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Slava Egorov

@mraleph

9 years

- My salary allows me to buy a 130m apartment in SF. - 130 m^2 you wanted to say? - No, my salary is not enough to break into 2nd dimension.

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Slava Egorov

@mraleph

3 years

In 2.15 we finally enable lightweight isolates (isolates that look isolated to developer - but share garbage collected heap internally) across all execution modes. This has been 3 years of deep work in the very guts of our runtime system 🎉🎉🎉

Dart Language

@dart_lang

3 years

🥳 Announcing Dart 2.15 🥳 Learn all about new Dart SDK features: ✔️ Faster concurrency with worker isolates ✔️ Constructor tearoffs ✔️ Improved enums ✔️ New features for package publishers Read the article by @MiSvTh →

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Slava Egorov

@mraleph

5 months

If you like @dart_lang and @FlutterDev the best you can do is to build new things with them - the code will outlive and outweight any and all Twitter discussions. Don't waste your time arguing - put it to better use: dream and create.

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Slava Egorov

@mraleph

8 years

presented without a comment

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Slava Egorov

@mraleph

9 years

here are my #GOTOChgo slides http://t.co/yeNX6jVWFF, mostly already seen examples but also some new http://t.co/qBrcgsw58d

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Slava Egorov

@mraleph

2 years

And so 4301 days after I pre-ordered it for the first time, it has finally arrived

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Slava Egorov

@mraleph

7 years

best kept #golang secret: their backend is written using abstraction over types, which they deny to the developers #trololol

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Slava Egorov

@mraleph

10 years

so I made this gdb patch http://t.co/aEq5C3c01a

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Slava Egorov

@mraleph

11 years

often devs still approach performance of JS code as if they are riding a horse cart but the horse had long been replaced with fusion reactor

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Slava Egorov

@mraleph

3 years

language design choices are not made by counting emojis under GitHub issues

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Slava Egorov

@mraleph

7 months

that's some nice Dart on the Server benchmarking

The Limits of JIT · Smoking JavaScript with Dart 🔥 | Barfoos

Chicken mumbles shared with the world

barfoos.com

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Slava Egorov

@mraleph

3 years

skills you need to know as a software engineer: 1) empathy 2) reading unfamiliar code 3) asking the right questions 3) zooming in and out on the big picture 5) sometimes it helps to know how to count.

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Slava Egorov

@mraleph

2 years

are you working with Dart/Flutter and suffering from slow IDE / completion / analysis? You feel like the tooling does not scale for your code base? I am looking to chat with people who are in this spot.

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Slava Egorov

@mraleph

5 years

["10 years at Google" a thread] so 10 years ago on 24 of February 2010 I crossed Danish border for the first, second and third time in my life. All within 30m... It was because I forgot my laptop on the pre-border security check, and had to go back to pick it up (1/n)

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Slava Egorov

@mraleph

3 years

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Slava Egorov

@mraleph

8 years

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Slava Egorov

@mraleph

7 years

imagine the world where people easily admit that their favorite programming language is not the best tool for every job and every developer

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Slava Egorov

@mraleph

8 years

javascript performance tips and tricks

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Slava Egorov

@mraleph

3 years

language design is freaking hard: I really wish Dart 1 did not try to be *soooo* simple and familiar, we would not spend years digging us out of the hole initial design has put us in

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Slava Egorov

@mraleph

8 months

I have no plans to go anywhere. So many exciting plans for Dart in 2024 💪 But remember that a team is always greater than an individual. Behind 1 visible Dart/Flutter team members there are 10 who turn actual gears and make things happen

Andrei Lesnitsky 💙

@lesnitsky_dev

8 months

Hope @mraleph stays in the Dart team for as long as he feels like compiling compilers, otherwise, what's the point

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Slava Egorov

@mraleph

2 years

Are you a Flutter/Dart developer? Have you been significantly hindered by Dart's current concurrency model (isolates)? I would like to chat with you. We have done a lot to improve isolates in the past years - but I would like to gather some real-world issues / road blocks.

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Slava Egorov

@mraleph

7 years

ain't no CS degree will prepare you for the Tower of Babel that is modern software engineering

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Slava Egorov

@mraleph

1 year

I am still puzzled why various Flutter tutorials recommend splitting apps into subpackages. Packages are for publishing, independent versioning and independent reuse. If you don't do either of these things - you don't really need packages.

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Slava Egorov

@mraleph

4 months

do *not* use custom platform packages developed by third-parties unless you want to loose tree-shaking of conditionally used code for now use as @TechnicalKn0ck suggests

Andrea Bizzotto 💙

@biz84

4 months

Did you know? If your code checks the current platform with Platform.isIOS, you’ll get a runtime exception when you run on Flutter web. 💥 As an alternative, consider using the UniversalPlatform package, which works on all platforms and offers a unified syntax. 👍

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Slava Egorov

@mraleph

7 years

next time somebody is gonna say "but you can *just* use LLVM!" I am gonna link them to this @whitequark 's comment

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Slava Egorov

@mraleph

6 years

I published "Introduction to Dart VM, Section 1: How Dart VM runs your code?", check it out

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Slava Egorov

@mraleph

3 years

@bunopus Вот такая философия и привела нас туда, где мы оказались. В ней отсутствует одно важное звено - она создаёт иллюзию, что есть "большие" и "маленькие" люди - и большие люди наделены какими-то особыми правами на изменения мира - тогда как в реальности все люди маленькие.

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Slava Egorov

@mraleph

8 years

"don't let programming languages that you like define your identity... define your identity based on the languages you hate."

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Slava Egorov

@mraleph

5 months

When the language has no garbage collector - that's just because *you*, the developer, are the garbage collector.

John Arundel

@bitfield

5 months

The genius of Go is that it has a garbage collector. The genius of Rust is that it doesn't need one.

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Slava Egorov

@mraleph

5 months

What's your biggest issue with Dart? Hit me with everything - here or in the DMs.

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Slava Egorov

@mraleph

8 years

Adventures in the land of substrings and RegExps (or making less_dart 7x faster)

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Slava Egorov

@mraleph

6 months

I started looking at JsonDecoder performance (or more specifically its hidden variant which you get by fusing JsonDecoder with Utf8Decoder). My goal is to get it as close to V8's JSON.parse as possible *without* rewriting it to C++.

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Slava Egorov

@mraleph

3 years

fuck. this. shit. 🖕

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Slava Egorov

@mraleph

2 years

my first commit to @dart_lang was on Apr 24, 2012 - so it's now officially 10 years I work on Dart 😱😱😱

Fix target address decoding in ia32 disassembler for CALL_JUMP_INSTR … · dart-lang/sdk@ccc28fe

…instructions. [email protected] Review URL: https://chromiumcodereview.appspot.com//10185001 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6871 260f80e4-7a28-3924...

github.com

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Slava Egorov

@mraleph

6 months

My opinion: you should never ever use FutureOr - its a sign something is wrong with your API. The only reason FutureOr exists is poorly designed APIs of Dart 1 which were shoehorned into Dart 2 era using FutureOr to avoid breaking changes

Sandro Maglione

@SandroMaglione

6 months

💡 Dart tip 💡 Do you know about `FutureOr` in @dart_lang ? 🤔 It allows to execute either sync or async 🔄 Here is how to use it 👇

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Slava Egorov

@mraleph

11 months

JS community is having a revelation that if you not only write your JS as C, but you also compile it as C then your performance is going to be veeeeery close to C. 🤯

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Slava Egorov

@mraleph

11 months

If you are curious how Dart VM is developed you watch me durdling around in the sources and listen to the sound of my keyboard

Dart VM hacking

null

www.youtube.com

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Slava Egorov

@mraleph

9 months

What do you expect from @dart_lang in 2024?

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Slava Egorov

@mraleph

4 years

just because I can

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Slava Egorov

@mraleph

7 years

array is a linked list with links going through the 4th dimension and therefore invisible to us 3d simpletons.

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Slava Egorov

@mraleph

9 years

how I imagine I look when writing code (2015 edition) http://t.co/LkBVzuIfV4

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Slava Egorov

@mraleph

4 years

step 1: make a five lines fix step 2: write a test for a fix step 3: refactor some code to make test possible step 4: refactor uncovers that our components depend on each other in rather messy way step 5: 195 files changed, 687 insertions(+), 608 deletions(-)

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Slava Egorov

@mraleph

3 years

я не знаю, как у вас, а у меня кукуха тихо едет

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Slava Egorov

@mraleph

4 months

performance tip #0 : for any sort of performance sensitive binary data processing 1. never use any of high-level List manipulation helpers 2. avoid redundant copies You can be amazed how fast things would go if you just follow these two things.

James O'Leary

@jpohhhh

4 months

TIL Dart: BytesBuilder, in `typed_data`. Lets you efficiently combine byte arrays without copying. Merging 60 x 16 KB Uint8Lists went from ~7 ms to 0 ms (it's an abstraction for only sending audio bytes with voice in them to Whisper in FONNX)

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Slava Egorov

@mraleph

9 months

JS is extremely flexible dynamically typed language TS for obvious reasons (incremental adoption) bends backwards to find a way to statically type all convoluted JS code in the world. end result: both the code and types (and type system) are convoluted.

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Slava Egorov

@mraleph

7 years

a very interesting paper about JSON "parsing" using SIMD (or rather extracting data from JSON without parsing)

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Slava Egorov

@mraleph

5 years

when I was a child I had a book with walkthroughs for computer games, which I sometimes read in the evening like a science fiction... cause I did not have a computer or those games.

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Slava Egorov

@mraleph

8 years

V8 joins esteemed company of GCC, LLVM, Z3, Coq, GHC and Jikes as a recipient of SIGPLAN Programming Languages Software Award \o/

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Slava Egorov

@mraleph

12 years

Explaining JavaScript VMs in JavaScript. http://t.co/RVRLI9gN

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Slava Egorov

@mraleph

6 years

I made an empty HTML file and opened it in VS Code - that means my empty project now depends on more than 7 million lines of code made by god knows whom. o tempora, o mores!

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Slava Egorov

@mraleph

6 months

Ребёнок просит на ночь читать ему стихи Хармса 👍 Начал читать и внезапно узнал из одного стиха, что тротуар раньше называли панелью. Я дядя 38ми лет и только сейчас понял откуда "стоять на панели" происходит - до этого я все время про какие-то строительные панели думал 🫣

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Slava Egorov

@mraleph

7 years

javascript framework is basically a virus that spreads around by infesting JS devs and instructing them to replicate it.

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Slava Egorov

@mraleph

1 year

And here I was thinking that Rust is the most infuriating thing industry can come up with, but the porcelain spiderweb of types people weave in TypeScript beats even Rust.

SaltyAom

@saltyAom

1 year

The logic The type

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Slava Egorov

@mraleph

4 years

please don’t say “Flutter is fast because Dart is compiled to native machine code in release builds” You can compile almost anything to machine code - does not mean it’s going to be fast

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Slava Egorov

@mraleph

2 years

the microbenchmark used to generate these numbers contains a flaw which is what causes the slow down, not minus-zero. ironically it is -1 that wreaks havoc here

Miško Hevery (AngularJS/Angular/Qwik)

@mhevery

2 years

`a = 0-x` is about 3-10x faster than `a = -x` 🤯 Let's jump into JavaScript VM details to see why and how to guard against this VM de-opt: 🧵🪡🧶

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Slava Egorov

@mraleph

7 years

all programming languages are awful, yet there are people enjoying all of them. so let them have some fun.

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Slava Egorov

@mraleph

3 years

Dart team will be hiring in Munich and Waterloo. We have a whole bunch of positions related to internal infra as well as external tooling and core Dart ecosystem. In addition we are always on a look out for VM/compiler/PL engineers. DM me if interested.

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Slava Egorov

@mraleph

6 years

when I was interviewing at Google 9 years ago 4th interviewer asked me to count set bits in 32-bit word. I wrote a loop and told them to consult “Hacker’s Delight” if they want something “fancy”. Still got hired somehow ¯\_(ツ)_/¯

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Slava Egorov

@mraleph

2 years

adding shared memory multithreading to @dart_lang

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Slava Egorov

@mraleph

1 year

pun intended?

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Slava Egorov

@mraleph

3 years

you might think that we only work on Dart in Aarhus - well, that's not really true :) There is also a team working on Android related technologies (R8/D8) and Kotlin. This team is hiring now:

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Slava Egorov

@mraleph

19 days

Here are my slides from @FlutterNFriends :

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Slava Egorov

@mraleph

19 days

One thing I found surprising: not that many people actually approached me to talk and many of those who approached started with "I dont want to bother you". You are not bothering me - I am here to chat with everybody who wants to ask me!

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Slava Egorov

@mraleph

6 years

my wife “hacked” a webshop by accident: she put few things into a basket, then switched web site language which seamingly emptied the basket, then placed same things again and ordered - now we got a package with double of everything but we paid for single 🤔

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Slava Egorov

@mraleph

11 years

year 2013: Haskell people are still writing monad tutorials, JavaScript people are still trying to explain inheritance.

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Slava Egorov

@mraleph

6 years

I have been going through my Google+ stuff to see if I have anything to archive...

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Slava Egorov

@mraleph

8 years

I used to think that parsers are a long solved problem, but then I looked into less.js implementation

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Slava Egorov

@mraleph

8 months

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Slava Egorov

@mraleph

7 years

saying that ClojureScript / Elm / ReasonML are "JavaScript flavors" is like saying that tea is a flavor of coffee.

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Slava Egorov

@mraleph

5 years

🥳🥳🥳

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Slava Egorov

@mraleph

7 years

lets make a collection: what’s your top 3 favorite PL implementation related paper of 2017 (reply with a paper & RT for outreach)

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Slava Egorov

@mraleph

7 years

controversial opinion: whiteboard interviews allow to check soft skill as much as coding/algo skills. If you throw a kindergarten level tantrum facing a 5 liner then you are probably lacking in both departments.

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Slava Egorov

@mraleph

7 years

and now with comparison against Rust+WASM version /cc @steveklabnik @samccone ->

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Slava Egorov

@mraleph

7 years

holy duck, the node.js governance structure is as overengineered as the javascript ecosystem itself

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Slava Egorov

@mraleph

6 months

My wife always makes fun of me for my choice of Linkedin profile photos

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Slava Egorov

@mraleph

2 years

after years of waiting... pattern matching is coming to @dart_lang 🚀

Leaf Petersen

@LeafPetersen

2 years

The patterns proposal (also from @munificentbob , he's on a tear) is also looking fantastic: . I'm pretty excited about this one.

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Slava Egorov

@mraleph

1 year

Life is too short to waste time debating hot takes on Twitter. Just keep shipping.

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Slava Egorov

@mraleph

1 year

Dart on the shore

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Slava Egorov

@mraleph

2 years

me gluing a variable length array to the end of the struct

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Slava Egorov

@mraleph

2 months

I looked at the issue with thread pool implementation in Dart VM - wanted to fix it discovered I need to slightly change locking helpers in VM wanted to cleanup duplication between VM core and IO impl discovered IO impl on Win relies on recursive locking (╯°□°)╯︵ ┻━┻

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Slava Egorov

@mraleph

5 months

@Dev_Salem0 I am with you on this one. Macros (first party data class macro) might be the most likely short term solution - but I am also trying to get traction on things like primary constructors. Stay tuned - 2024 is the year we finally make some progress on this cc @MiSvTh @LeafPetersen

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Slava Egorov

@mraleph

4 years

When somebody says that reference counting is better than GC 🤷‍♂️

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Slava Egorov

@mraleph

3 years

Dart team has an opening in Zurich on the subteam which is responsible for the process and infrastructure for bringing latest-and-greatest Dart SDK releases into Google's internal monorepo. DM me if you want to apply or you would like to know more.

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Slava Egorov

@mraleph

3 years

how in one picture show that you don't know neither of three languages well enough to understand and appreciate the ways in which they all differ from each other

Fireship

@fireship_dev

3 years

What the hell is Dart? #Flutter

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Slava Egorov

@mraleph

9 years

"Measuring Polymorphism in Python Programs" interesting paper from DLS

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Slava Egorov

@mraleph

4 years

recruiter: we are looking for experienced Flutter developers me: I can hand craft Dart AOT snapshots in hex editor, that good enough?

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Slava Egorov

@mraleph

9 months

the problem is not dynamic typing - it's the obscene amounts of code that people write to do simplest things. if you keep simple things simple and avoid proliferating complexity then you would not need to create solutions for managing this complexity.

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Slava Egorov

@mraleph

10 months

I honestly don't understand how people do code reviews on GitHub. It's just such a awful experience even when compared to freaking Rietveld

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Slava Egorov

@mraleph