3781
How Uber tests payments in production
Well-run payment systems are developed by engineers who understand what is the best use of their time: to catch unknown unknowns, and to do it fast.
New
The latest blog posts to take off on Hacker News. 21,819 posts.
3782
3783
Tracking supermarket prices with Playwright
Back in Dec 2022, when inflation was running high, I built a website for tracking price changes in the three largest supermarkets of my home country, Greece.
3784
Full text search over Postgres: Elasticsearch vs. alternatives
A comprehensive comparison between Elasticsearch and PostgreSQL for search workloads.
3785
Structured Outputs in the API
We are introducing Structured Outputs in the API—model outputs now reliably adhere to developer-supplied JSON Schemas.
3786
Why Polars rewrote its Arrow string data type
We have completely rewritten the string/binary data structure we use in Polars.
3787
Crafting formulas: Lambdas all the way down
We build complex mathematical formulas bottom-up using pure lambda calculus. Includes instructions of how to translate Taylor series and other approximations to lambda terms.
3788
3789
Debugging a rustc segfault on Illumos
Using `mdb` and `pmap` to find the cause of a crash.
3790
C++'s `noexcept` can sometimes help or hurt performance
Over the course of working on PSRayTracing (PSRT), I've been trying to find all sorts of tricks and techniques to squeeze out more performance from this C++ project. Most of it tends to be alternative algorithms, code rewriting, and adjusting data structures. I thought sprinkling the final keyword like an all purpose…
3791
How to Get or Create in PostgreSQL
And why it is so easy to get wrong...
3792
How I Program in 2024
I talk a lot here about using computers freely , how to select programs to use, how to decide if a program is trustworthy infrastructure one can safely depend on in the long term. I also spend my time building such infrastructure, because there isn't a lot of it out there. As I do so, I'm always acutely aware that I'm…
3793
Porting my JavaScript game engine to C for no reason
tl;dr: high_impact is small game engine for 2D action games. It's written in C, compiles to Windows, Mac and Linux as well as to WASM for the Web. It's “inspired by” my original Impact JavaScript game engine from 2010. The name high_impact is a nod to a time when C was considered a high level language.
3794
You can contribute to KDE with non-C++ code
Lots of underrated areas to work on
3795
Parsing Protobuf Definitions with Tree-sitter
If you work with Protocol Buffers (protobuf), you can really save time, boredom, and headache by parsing your defin…
3796
Revisiting Linux CPU Scheduling
Disclaimer: This is to the best of my knowledge. It's a complicated topic, there are tons of options, and this only covers a tiny fraction of this topic anyway. If you spot mistakes, please tell me.
3797
Clang vs. Clang
This is a blog post about an experiment with Clang. I need to explain some context first.
3798
Primitive Recursive Functions for a Working Programmer
Programmers on the internet often use Turing-completeness terminology. Typically, not being Turing-complete is extolled as a virtue or even a requirement in specific domains. I claim that most such discussions are misinformed --- that not being Turing complete doesn't actually mean what folks want it to mean, and is…
3799
"We ran out of columns"
Oh the merchants2 table? Yeah, we ran out of columns on merchants, so we made merchants2
3800
Tauri 2.0 Release Candidate
The cross-platform app building toolkit
3801
Programming a CH32v003 with light
A comedic example, parked nicely on the thinnest wedge of the venn diagram, is the HamFurs – people who do amateur radio while wearing fur suits. While it isn't my cup of tea, I love that such a group exists. They seemed like nice people when I chatted to them.
3802
3803
How Google handles JavaScript throughout the indexing process
Over the years, Google's treatment of JavaScript has changed, leaving us with misconceptions of how it's indexed. Here, we debunk the myths.
3804
I prefer rST to Markdown
I will never stop dying on this hill
3805
`find` + `mkdir` is Turing complete
We show that a system that has only GNU's find and mkdir commands is Turing-complete.
3806
Building static binaries with Go on Linux
One of Go's advantages is being able to produce statically-linked binaries [1] . This doesn't mean that Go always produces such binaries by default, however; in some scenarios it requires extra work to make this happen. Specifics here are OS-dependent; here we focus on Unix systems.
3807
JavaScript garbage collection and closures
GC within a function doesn't work how I expected
3808
Taking command of the Context Menu in macOS
Yesterday on Twitter the inimitable Morten Just posted a preview of a tool he’s created that wrap ffmpeg to allow movies, such screen recordings but pretty m...
3809
Making Machines Move
Gather round the fire to hear the tale of how we built migration for stateful apps on a global public cloud without building a SAN.
3810
Crafting Interpreters with Rust: On Garbage Collection
I became interested in implementing programming languages a few years ago and discovered [Crafting Interpreters](https://craftinginterpreters.com/) by Bob Nystrom. At the time, I had experience with Rust and decided to use it to follow the book. Albeit, being a noob, I managed to implement a fully functional bytecode…