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Qt for WebAssembly
Explore the Qt Blog for the latest insights on e.g. Qt Creator, your go-to source for cross-platform development tips and updates.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 21,826 posts.
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My Favorite One Liners
My favorite Linux command-line one-liners: turn shell output into an image, find your biggest directories, list your most-used commands, serve files over HTTP.
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Why I still reach for Lisp and Scheme instead of Haskell
Scheme (and Lisp) lets you express complex systems and problem domains in simpler terms than any other language can. For all its brilliance, Haskell resists most of the attempts people make to just hack and write useful code quickly.
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Is there a maximum size for Windows clipboard data?
There is no pre-set maximum size, but that null might be coming from somewhere else.
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Generating JSON Directly from Postgres
PostgreSQL has built-in JSON generators that can be used to create structured JSON output right in the database, upping performance and radically simplifying web tiers.
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The polynomial algorithm for 3-SAT problem (or P=NP)
Dear Fellow Researchers, Would you kindly pay attention to the article “Non-Orthodox Combinatorial Models Based on Discordant Structures” by the author V. F. Romanov published on arXiv.…
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Beyond agentic coding
AI dev tooling can do better than chat interfaces
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A faster way to calculate the day of the week
A range of fast modulus techniques that beat compiler output
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Django 1.9 Released
Posted by Tim Graham on Dec. 1, 2015
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“ZLinq”, a Zero-Allocation LINQ Library for .NET
I’ve released ZLinq v1 last month! By building on structs and generics, it achieves zero allocations. It includes extensions like LINQ to…
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How does a B-tree make queries fast?
B-tree is a structure that helps to search through great amounts of data. It was invented over 40 years ago, yet it is still employed by the majority of modern databases. Although there are newer index structures, like LSM trees, B-tree is unbeaten when handling most of the database queries.
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Scrapy Tips from the Pros
Scrapy Tips from the Pros: Part 1 - Learn from seasoned web scrapers with our expert tips series. Optimize your scraping projects for success.
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Learn Emacs Lisp in 15 minutes
I was surprised not to find an introduction to Emacs Lisp on learnxinyminutes.com, so I created one, which is now maintained there. Comments and feedback are we...
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Vim tricks
I’ve been using Vim for eight years and am still discovering new things. This is usually seen as a Good Thing About Vim. In my head, though, it’s a failing of discoverability: I keep discovering new things because Vim makes it so hard to know what’s available. While people often talk about the beauty of modal editing…
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How do Unix pipes work?
Pipes are cool! We saw how handy they are in a previous blog post . Let's look at a typical way to use the pipe operator. We have some output, and we want to look at the first lines of the output. Let's download The Brothers Karamazov by Fyodor Dostoevsky, a fairly long novel.
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Crafting Interpreters: Closures
As the man said, for every complex problem there’s a simple solution, and it’s wrong.
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Static TypeScript: A Static Compiler for the TypeScript Language
Static TypeScript is designed to be useful in practice (especially in education), while being amenable to static compilation targeting small devices.
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Memory Bandwidth Napkin Math
An exploration into C++ memory throughput performance.
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What is in that .git directory?
Well, I think most of you reading this blog use git more or less on a daily basis, but have you ever looked into what is in the .git folder that git creates? Let's explore it together and understand what is going on in there.
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Android Performance Case Study
Measure frame time, allocations, overdraw, and repeated work before changing code; the useful optimization is the one a trace can prove.
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How Do You Look When Merging Fails
There was a Simpsons episode, I can’t recall correctly, but I think Bart recorded Lisa when her heart broke and he watched it in slow motion to stop exactly at that point. I thought of this e…
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LLVM for Grad Students (2015)
LLVM is a godsend of a research tool. Here are some detailed notes on what LLVM is, why you would want to use it for research, and how to get started as a compiler hacker.
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Piccolo – A Stackless Lua Interpreter
piccolo is an interpreter for the Lua language written in pure, mostly safe Rust with an eye towards safe sandboxing and resiliency. It uses gc-arena for its garbage collection system, and in fact gc-arena was originally created as part of piccolo .
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The Lisp Curse
The expressive power of Lisp has drawbacks.
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Women: Learn to Program This Summer
As an investor, I've found that one of the reasons there are fewer female startup founders than male ones is that there are fewer female programmers. So this summer I'm trying an experiment to see...
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Uncomfortable Truths in Software Engineering
New Post: ADTs in TLA+ Using Abstract Data Types in TLA+. It's an adaptation of part of my TLAConf talk. It's also a lot more advanced than most of the...