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I vibed a proof of Conway's conjecture
You can just prove things, apparently.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 14,540 posts.
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The Last Technical Interview
Today we will pour one out for the vaunted technical interview process, which is on its last leg. And we’ll talk a little about what’s…
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Giving C a superpower: custom header file (safe_c.h)
The story of how I wrote a leak-free, thread-safe grep in C23 without shooting yourself in the foot, and how you can too! Introduction Let's be honest: mos...
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Aaron Swartz's Thoughts on djb (2009)
I think it’s time to remind people that D. J. Bernstein is the greatest programmer in the history of the world.
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Yagni
Yagni ("You Aren't Gonna Need It") is the principle that we should not build presumptive features. It should not be used as a justification for neglecting internal quality.
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Go is amazing, period.
I've been messing around with Go for quite some time now and I wanted to share my experiences. When I first looked at Go, I put it aside a...
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Don't be clever
The story of the CRUDController
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Thread-per-core
I want to address a controversy that has gripped the Rust community for the past year or so: the choice by the prominent async “runtimes” to default to multi-threaded executors that perform work-stealing to balance work dynamically among their many tasks. Some Rust users are unhappy with this decision, so unhappy that…
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GPT-3 can run code
Enter in code and inputs, GPT-3 will compute you the output!
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Composable SQL
Better SQL through typed, composable query fragments.
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Fun facts about Rust's growing popularity
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How do HTTP servers figure out Content-Length?
Anyone who has implemented a simple HTTP 1.1 server can tell you that it is a really simple protocol. Basically, it's a text file that has some specific rules t…
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SQLite on Rails: The how and why of optimal performance
This is my personal site, where I write about Ruby, programming, and any of my varied fascinations.
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Interactive examples for learning jq
Learn how to search, query, and modify JSON data with 25 interactive jq examples and explanations
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Booting Linux in QEMU and Writing PID 1 in Go to Illustrate Kernel as Program
Most books and courses introduce Linux through shell commands, leaving the kernel as a mysterious black box doing magic behind the scenes. In this post, we will run some experiments to demystify it: the Linux kernel is just a binary that you can build and run.
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Modernizing “less”
I have just spent an all-nighter doing something I didn't expect to do. I've " modernized " less (1). (That link is to the changeset.) ...
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Optimizing Ruby's JSON, Part 1
I was recently made maintainer of the json gem, and aside from fixing some old bugs, I focused quite a bit on its performance, so that it is now the fastest JSON parser and generator for Ruby on most benchmarks.
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John Carmack on Parallel Implementations (2018)
ps aux | more
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Elite for Emacs (2015)
A recent discovery from old backups revealed something long forgotten: I really developed a version of Elite for…. that’s right… Emacs text editor.
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Testing Distributed Systems
Curated list of resources on testing distributed systems
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Log Structured Merge Trees
A detailed look at the interesting LSM file organisation seen in BigTable, Cassandra and most recently MongoDB.
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Lessons for Agentic Coding: What should we do when code is cheap?
Ten lessons for coding with agents, from implementing to learn to remembering that code is cheap but maintenance and security aren’t.