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The Stack Monoid
(Updated 2020-09-06 with pointers to related work and a bit more explanation)
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 267 posts.
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How to implement search-by-color when all you have is a good coffee
Hey there! Last week I started working on a rewrite of Shefa Products which is a wholesale merchandising e-commerce for Argentina.
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Safely Reviving Shared Memory
At Mozilla, we want the web to be capable of running high-performance applications so that users and content authors can choose the safety, agency, and openness of the web platform. ...
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Are CRDTs suitable for shared editing?
The sole purpose of this blog is to host a single article..
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Computers Can Be Understood
Computers and computer systems are build up from deterministic, comprehensible, building blocks. Their operations and behaviors can be understood and reasoned about. I relate my personal beliefs and mindset on this point, and explore some manifestations and ramifications of this philosophy.
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Faster Integer Parsing
Back with a post after 6 years of silence. If you had to parse a microsecond-resolution epoch timestamp as quickly as possible, how would you do it? We’ll take a look at using compiler intrinsics to do it in log(n) time.
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A New RegExp Engine in SpiderMonkey
Regular expressions – commonly known as RegExps – are a powerful and heavily used tool for manipulating strings in JavaScript. This post describes how we updated the RegExp engine in ...
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Racket-on-Chez Status
posted by Matthew Flatt For background information about Racket on Chez Scheme (a.k.a. Racket CS), see the original announcement, the January 2018 report, the report at Scheme Workshop 2018, the January 2019 report, the ICFP experience report, an...
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The social side of science seen in the research on programming language quality
I love science. Not the “space is beautiful” faux-science, but the process of doing science. Hours spent calibrating equipment, cross-checking cites of cites of cites, tedious arguments about p-values and prediction intervals, all the stuff that makes science Go. And, when it does happen, the drama. I also want us to…
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What the Heck Is Pyproject.toml?
Recently on Twitter there was a maintainer of a Python project who had a couple of bugs filed against their project due to builds failing (this particular project doesn't provide wheels, only sdists). Eventually it came out that the project was using a pyproject.toml file because that's
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Fast high-level programming languages
Python and R are slow when they can’t rely on functionality or libraries backed by C/C++. They are inefficient not only for certain algorithm development but also for common tasks such as FASTQ parsing. Using these languages limits the reach of biologists. Sometimes you may have a brilliant idea but can’t deliver a…
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Towards Crystal 1.0
Currently the main goal of the Crystal core team is to reach 1.0 in the near future. Since achieving that goal involves a number of non-obvious tradeoffs, we want to use this post to shed some light on those inherent tensions and how they drive our work and priorities for the next few releases.
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Checked exceptions: Java’s biggest mistake (2014)
Checked exceptions have always been a controversial feature of the Java language.
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.NET 5.0
.NET 5.0 includes many enhancements, including single file applications, more capable JSON APIs, new versions of C
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The Era of Visual Studio Code
Roben Kleene’s blog
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How some good corporate engineering blogs are written
I've been comparing notes with people who run corporate engineering blogs and one thing that I think is curious is that it's pretty common for my personal blog to get more traffic than the entire corp eng blog for a company with a nine to ten figure valuation and it's not uncommon for my blog to get an order of…
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RBS, Ruby’s new type signature language
Introducing RBS, Ruby’s new type signature language
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Build tools around workflows, not workflows around tools
While I was there, I thought a lot about tools – mechanical tools, software tools, tools that last, and tools that are fragile. The somber snow-covered scenery made me think about how quickly most of the tools we use today get outdated or replaced, and I thought about the kinds of tools that I’ve been building for…
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Getting started with bare-metal assembly
Seeing a program you wrote running directly on the bare metal is deeply satisfying to anyone who enjoys writing software. And it turns out that creating such a program from scratch is easier than it sounds. The hardest part is figuring out where to start. In this tutorial, I'll show you how to write, build and run the…
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In Praise of AutoHotKey
People think it’s weird that I do all my development on a Windows machine. It’s definitely a second-class citizen experience in the wider development world, and Windows has a lot of really frustrating issues, but it’s still my favorite operating system. This is for exactly one reason: AutoHotKey. AHK is an engine for…
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CRDTs: The Hard Parts [video]
A talk at Hydra distributed computing conference , online (originally planned to be in Moscow, Russia), 06 Jul 2020
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LightSpeed: Rewriting Messenger’s codebase for a faster, smaller, simpler app
We are excited to begin rolling out the new version of Messenger on iOS. To make the Messenger iOS app faster, smaller, and simpler, we rebuilt the architecture and rewrote the entire codebase, whi…
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YOLOv5: State-of-the-art object detection at 140 FPS
YOLOv5 license and commercial-use guide: AGPL-3.0 terms, specs, resources, and alternatives. Compare YOLOv5 against other vision models free.
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TypeScript 4.1
Today we're proud to release TypeScript 4.1! If you're unfamiliar with TypeScript, it's a language that builds on JavaScript by adding syntax for type
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Double Blind Passwords a.k.a. Horcruxing
Before we get into Horcruxing, here's a quick prologue on online security hygiene. You can skip to the Horcruxing section if it seems redundant. 1. Longer…
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Let's Reverse Engineer Discord
How we reverse engineered Discord’s call protocol and found it being MITM-ed by Discord.
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The Great CoffeeScript to Typescript Migration of 2017
Editor’s preface: When I first joined Dropbox in May 2017, we were at the tail end of our CoffeeScript to TypeScript migration. If you wanted to make changes to a CoffeeScript file, it was considered common courtesy to convert it to TypeScript while you were at it. Parts of our codebase were still using…