Topics /
The most popular blog posts about software engineering on Hacker News. 14,544 posts.
I wanted to share a story of a segmentation fault I helped track down this weekend. I thought the final root cause of the segfault was interesting because of how unrelated it was to the code I was trying to debug.
An in-depth analysis of how World of Warships obfuscates its game scripts and how to mostly deobfuscate them automatically.
The partition function p ( n ) counts the number of partitions of n , i.e. the number of ways n can be written as a sum of positive integers when disregarding the order of the terms. For example, 4 has the five distinct partitions 4, 3+1, 2+2, 2+1+1, 1+1+1+1, so p (4) = 5. This week, I set a new record by computing…
By Devine Lu Linvega
Devcards is a ClojureScript library that helps developers interactively lift code examples out of their source files into an organized set of cards in the browser.
It’s well known that volatile in Java doesn’t mean the same thing as atomic . As Jeremy Manson says :
The Nix language lacks a good type system . There are already several configuration languages that provide static and even gradual typing (see, e.g., Cue , Dhall , or Nickel ), but none offer the ability to easily annotate legacy Nix code with types.
Multiple Neighborhood Cellular Automata (MNCA) produce complex and robust emergent structures not commonly seen in simpler models
Just now, Avdi had a miserable experience buying curtains. He went to pick up an order that he placed last night, but Lowe’s didn’t have it. The order was sent to the wrong store and it…
I recently decided to try out RabbitMQ (the popular messaging queue) to fix the problem of notifications.
Introducing Codebrawl, a Ruby and open source programming contest website
Serving the right code to the right browsers can be tricky. Here are some options.
PostgreSQL 16 was released last week. This is the story of a feature.
An empirical study on the correctness of formally verified distributed systems Fonseca et al., EuroSys’17 “Is your distributed system bug free?” “I formally verified it!R…
Teaching rigorous distributed systems with efficient model checking Michael et al., EuroSys’19 On the surface you might think today’s paper selection an odd pick. It describes the labs enviro…
Given the current register state for a thread, and read-only access to memory, what would the register state hypothetically become if the current function was to immediately return and execution was to resume in its caller?
TLDR; Starting from Linux kernel version 6.9 on x86_64, there’s a new config option CONFIG_X86_FRED enabled and it adds 16 bytes to the starting point of a task’s kernel stack area, so you’ll need to account for this extra padding in your “raw” kernel stack & pt_regs lookup code. Update: It turns out that there’s a…
I’m pleased to introduce the third generation of my attoparsec parsing library. With a major change to its internals, it is both faster and more powerful than previous versions, while remaining backwards compatible. Comparing to C Let’s start with a speed comparison between the hand-written C code that powers…
Sharing and reusing memory buffers is inescapable if we want high performance. It is a sharp but powerful tool.
