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A faster way to calculate the day of the week
A range of fast modulus techniques that beat compiler output
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 49,211 posts.
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“ZLinq”, a Zero-Allocation LINQ Library for .NET
I’ve released ZLinq v1 last month! By building on structs and generics, it achieves zero allocations. It includes extensions like LINQ to…
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Care
My tech posts often come from kind of a negative place. I wish it wasn't like that, but we all know how the mind works: writing with nuance and positivity is a lot harder than fired-up screeds of the "someone is wrong on the Internet" variety.
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What is special about Nim?
Russian Translation by frol , Chinese Translation by JiyinYiyong , Japanese Translation by Mutsuha Asada
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Learn Emacs Lisp in 15 minutes
I was surprised not to find an introduction to Emacs Lisp on learnxinyminutes.com, so I created one, which is now maintained there. Comments and feedback are we...
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Vim tricks
I’ve been using Vim for eight years and am still discovering new things. This is usually seen as a Good Thing About Vim. In my head, though, it’s a failing of discoverability: I keep discovering new things because Vim makes it so hard to know what’s available. While people often talk about the beauty of modal editing…
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How do Unix pipes work?
Pipes are cool! We saw how handy they are in a previous blog post . Let's look at a typical way to use the pipe operator. We have some output, and we want to look at the first lines of the output. Let's download The Brothers Karamazov by Fyodor Dostoevsky, a fairly long novel.
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Crafting Interpreters: Closures
As the man said, for every complex problem there’s a simple solution, and it’s wrong.
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Memory Bandwidth Napkin Math
An exploration into C++ memory throughput performance.
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What is in that .git directory?
Well, I think most of you reading this blog use git more or less on a daily basis, but have you ever looked into what is in the .git folder that git creates? Let's explore it together and understand what is going on in there.
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How a CPU works: Bare metal C on my RISC-V toy CPU
I always wanted to understand how a CPU works, how it transitions from one instruction to the next and makes a computer work. So I thought: let's implement one and run a C program on it.
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Who is Anna-Senpai, the Mirai Worm Author?
On September 22, 2016, this site was forced offline for nearly four days after it was hit with “ Mirai ,” a malware strain that enslaves poorly secured Internet of Things (IoT) devices like wireless routers and security cameras into a botnet for use in large cyberattacks. Roughly a week after that assault, the…
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Android Performance Case Study
Measure frame time, allocations, overdraw, and repeated work before changing code; the useful optimization is the one a trace can prove.
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How Do You Look When Merging Fails
There was a Simpsons episode, I can’t recall correctly, but I think Bart recorded Lisa when her heart broke and he watched it in slow motion to stop exactly at that point. I thought of this e…
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LLVM for Grad Students (2015)
LLVM is a godsend of a research tool. Here are some detailed notes on what LLVM is, why you would want to use it for research, and how to get started as a compiler hacker.
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Piccolo – A Stackless Lua Interpreter
piccolo is an interpreter for the Lua language written in pure, mostly safe Rust with an eye towards safe sandboxing and resiliency. It uses gc-arena for its garbage collection system, and in fact gc-arena was originally created as part of piccolo .
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The Lisp Curse
The expressive power of Lisp has drawbacks.
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Women: Learn to Program This Summer
As an investor, I've found that one of the reasons there are fewer female startup founders than male ones is that there are fewer female programmers. So this summer I'm trying an experiment to see...
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The Gentle Singularity
We are past the event horizon; the takeoff has started. Humanity is close to building digital superintelligence, and at least so far it’s much less weird than it seems like it should be. Robots...
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Uncomfortable Truths in Software Engineering
New Post: ADTs in TLA+ Using Abstract Data Types in TLA+. It's an adaptation of part of my TLAConf talk. It's also a lot more advanced than most of the...
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Does Georgism work? Is land a big deal?
A guest post on Georgism by Lars Doucet
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The impact of the ‘long peace’ on modern military capabilities
Bret Devereaux (A Collection of Unmitigated Pedantry)2023268 points325 commentsHistory & Retro Computing details
Fireside this week! We actually haven’t had one of these in quite a while; we had a gap week in April but the last Fireside looks like it was in March! In any case, here we are and here’…
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