The latest blog posts to take off on Hacker News. 21,823 posts.
Happy with my recent breakthrough in understanding C integer divisions after weeks of struggle, I was minding my own business having fun writing integer arithmetic code. Life was good, when suddenly… zsh: segmentation fault (core dumped) .
Yes, this is a problem of weak static typing of pure C. Pure C is a great tool for some jobs, but here be dragons , as they say.
In Emacs version 28 Emacs developers introduced so-called read symbol shorthands. If you’re interested in the rationale, feel free to search the Emacs developer mailing list for the discussion. However, it does seem that not everyone likes the idea of shorthands as a substitution for namespaces (or packages, if you’re…
Composite indexes aka multi-column indexes are about 10x faster than index merges. In Postgres, the gap is larger than in MySQL because Postgres doesn’t support index-only scans for queries that involve index merges.
Collaborative peer-to-peer applications sometimes need to operate on sequences of objects with a consistent order across all peers. For example, a peer-to-peer photo album application might need to sync the order in which photos appear in an album.
Dmitri's blog about programming, Clojure, and software development
A browser sorting benchmark comparing JavaScript, Go, TinyGo, Rust, and AssemblyScript, with source code and test conditions.
Many users of Python deprioritize performance in favor of soft benefits like ergonomics, business value, and simplicity. Users who prioritize performance typically end up on faster compiled languages like C++ or Java.
Each time we evaluate an expression, the REPL shows us a textual representation of the result: that’s the Print part of Read-Eval-Print-Loop . Most of the time, this textual representation is clear enough for the programmer, but sometimes it becomes difficult to read - especially when dealing with big or deeply nested…
My colleagues recently wrote a great post on the Netflix tech blog about a tough performance issue they wrestled with. They ultimately diagnosed the problem as false sharing, which is a performance…
You sometimes feel the need to make all of your integers positive, without losing any information. That is, you want to map all of your integers from 'signed' integers (e.g., -1, 1, 3, -3) to 'unsigned integers' (e.g., 3,2,6,7). This could be useful if you have a fast function to compress integers that fails to ……
I occasionally do talks about curl. In these talks I often include a few slides that say something abut curl's coverage and presence on different platforms. Mostly to boast of course, but also to help explain to the audience how curl has manged to reach its ten billion installations. This is current incarnation of…
Hello, engineers! I'm a newer face at Wube and have been mainly working on expansion content for about one year now. Today, I'm here to share some exciting non-expansion news for our Mac players.
Recently I gave a guest lecture in a graduate level software engineering course on the value of technical writing for software engineers. This post is a sort of rough transcript of my talk. I live-…
The code formatting and typography is frequent, controversial but probably unavoidable topic among programmers. This document contains some representative and possibly, relevant examples of the Lisp code.
While browsing twitter, I came across this tweet:
In this post, we analyze a malicious PyPI package attempting to backdoor FastAPI applications.
For the past several weeks, I've been trying to fix a cranky spec in Karafka integrations suite, which in the end, lead me to become a Ruby on Rails micro-contributor and submitting similar fix to several other high-popularity projects from the Ruby ecosystem. Here's my story of trying to make sense of my specs and […]
Today we are very excited to launch Wasmer 3.0, following three months of work since our first alpha. So, what’s new in Wasmer? - `wasmer` is now able...
In this series of blogposts, I will document my experience of porting the game that I am currently working on to the jai programming language. It’s currently written in mostly D and some C++ and comes in at exactly 58,620 lines of code (excluding libraries). I’ve planned on doing this for a long time and want to keep…
Falling out of love with warp Back when I wrote this codebase, warp was the best / only alternative for something relatively high-level on top of hyper. I was never super fond of warp’s model — it’...
PhD student in Photophysics
Abstract TL/DR I present what I belive is a unique index for indexing and searching source code. It copies ideas from Bing bitfunnel implementation to create a very fast, memory efficient trigram …
With my iPad having replaced my MacBook, the last thing I was missing was Emacs , which I not only enjoy hacking on, but is also how update my blog and resume! Let’s just say that it’s an integral tool in my life which I wanted access to, and I managed to make it happen.
An under-appreciated Rust feature
Announcing the GHC WebAssembly backend – present and future
