The latest blog posts to take off on Hacker News. 1,551 posts.
In this edition of Napkin Math, we’ll invoke the spirit of the Napkin Math series to establish a mental model for how a neural network works by building one from scratch. In a future issue we will do napkin math on performance, as establishing the first-principle understanding is plenty of ground to cover for today!
Mentors should operate at three levels: goals, situations, and skills.
libimagequant is a library for generating high-quality palettes, useful for compression of transparent PNG images (~75% smaller!) and making nice GIF animations .
What UUIDs and ULIDs are under the hood, and how to encode and use them.
Many developers today have no idea what programming was like in the 80s.
A blog by sunfishcode
How we built an engineering culture based on trust that allows us to move incredibly fast without requiring code reviews.
Our most important goal in writing software is that it be correct. The software must do what the programmer wants it to do. It must meet the needs of the user. In the business world, double-entry bookkeeping is the idea that transactions are recorded in at least two accounts (debit and credit). One of the … Continue…
TLDR? You can find the code and a bunch of examples on GitHub at dps/rust-raytracer. Over the holiday break, I decided to learn Rust. Rust is a modern systems programming language which has a really interesting type system. The type system can catch broad classes of common programming mistakes - e.g. ensuring memory…
What do you do when libc is your bottleneck? If the total runtime of your process is under 10ms, most of this time (depending on your hardware) is spent waiting for the linker and C runtime to set things up. If you compare this to the Latency Numbers Every Programmer Should Know , it falls right above "disk seek" and…
Similarities between good writing and good code.
Over the past few years, I’ve interviewed with a dozen or so companies and have completed ~50 or so individual algorithm problems. I’m frequently given feedback that I did a great job at the algorithms problem. In this post, I’m going to share how exactly I approach algorithm problems. Thought Process A guiding…
Notes on BPF & eBPF
Notable programmers describe understanding and coding in LISP as a semi-religious experience. What gives the language this power?
Over the last three months, I’ve developed an unusual little nighttime routine: after reading bedtime stories to the kids, I hop into bed and instead of reaching for a fiction book, I’m turning on my 14-year old Asus eeePC 701 (wikipedia.org) miniature laptop and writing x86 assembly language. This is turning out to…
Almost Always Unsigned # Written by Dale Weiler Twitter GitHub Last updated Saturday, January 1, 2022 The need for signed integer arithmetic is often misplaced as most integers never represent negative values within a program. The indexing of arrays and iteration count of a loop reflects this concept as well. There…
2021 was not too kind to me. I discovered that I not only have OCD but OCPD, a personality disorder. If you’ve ever had a conversation with me where I just couldn’t let something go because it was wrong or incorrect and it bothered me, now you know why. I have, for better or worse, extremely high standards for…
Dwarf Fortress is one of those oddball passion projects that’s broken into Internet consciousness. It’s a free game where you play either an adventurer or a fortress full of dwarves in a randomly generated fantasy world. The simulation runs deep, with new games creating multiple civilizations with histories…
In a way, these two books are responsible for my entire professional career. With early computers, you didn’t boot up to a fancy schmancy desktop, or a screen full of apps you could easily poke and prod with your finger. No, those computers booted up to the command line.
