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Execution units are often pipelined
In the context of out-of-order microarchitectures, I was under the impression that execution units remain occupied until the µop they’re processing is complete. This is often not the case.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 14,540 posts.
7562
What is agentic engineering?
What is agentic engineering? - Agentic Engineering Patterns
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Qbrt – Cross-platform HTML/JS desktop apps using the Firefox Gecko runtime
I recently blogged about discontinuing Positron. I’m trying a different tack with a new experiment, codenamed qbrt, that reuses an existing Gecko runtime (and its existing APIs) while simplifying t…
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Avoiding Webscraping Throttling Using Python and Tor as a Proxy
In order to hide your IP address and to try and limit throttling when web scraping, it might be a good idea to use a proxy such as Tor. This post describes how to use Python based web scraping tools and Tor to hide yourself when scraping websites for data. However, it can also be used more broadly when using Python to…
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The Magic CmdLine and how I got it back
What am I running inside my bash?
7567
Technology Choices for My SaaS in Retrospect
Two years ago, I started out building a new software product. From the start, it would require mobile, web, and backend components to make it work, so I had to make quite a few technology choices. Here is how those turned out.
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Beyond Ctrl-C: The dark corners of Unix signal handling
An introduction to signals: a written version of my talk at RustConf 2023.
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Recent adventures in performance optimization with Rust
How to hash, index, profile, multi-thread, and SIMD your way to incredible speeds.
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Introducing Electron Fiddle
Create, share, and play with small Electron experiments.
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The Third Hard Problem
It’s not off-by-one errors.
7574
A deep dive into Apple's .car file format
Reverse-engineering the .car file format used by Apple's asset catalogs and how to parse it without Apple's proprietary tools
7575
Modern SQL: With – Organize Complex Queries
The WITH clause adds named subqueries to SQL queries. WITH is also known as Common Table Expression (CTE).
7576
How misaligning data can increase performance 12x by reducing cache misses
Here's the graph of a toy benchmark 1 of page-aligned vs. mis-aligned accesses; it shows a ratio of performance between the two at different working set sizes. If this benchmark seems contrived, it actually comes from a real world example of the disastrous performance implications of using nice power of 2 alignment…
7577
Garbage collection is useful
A long time ago, I spent a few years working on garbage collection in the J9 Java VM. 1 And even though I’ve since done mostly done higher-level stuff, having a deeper knowledge of GC has continued to come in useful.
7578
ReasonML: Strict, powerful and forgiving
I gave this talk at JSFoo, Bengaluru, in October 2018. It describes my experience in switching to ReasonML on the Turaku project and how learning to use a statically-typed functional programming language involves much more than learning the language's syntax or features.
7579
Integrating Zig and SwiftUI
Building a native GUI for a cross-platform application is a decades old problem. Nowadays, most people just don't and fallback to using a non-native experience such as Electron instead.
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How I Program Stuff
My method for writing code I care about: isolate myself for confidence and energy, eliminate every distraction, then code ruthlessly with no regrets.
7581
Finding secrets by decompiling Python bytecode in public repositories
Cache rules everything around me. `pyc` files can contain secrets and should not be checked in to source control. Use the standard Python [.gitignore](https://github.com/github/gitignore/blob/master/Python.gitignore).
7582
Mod and remainder are not the same
A remainder and a modulus look so very similar, but they are not the same thing and worse, are treated differently by different programming languages. Do you know how your language handles mod?
7583
Fixing Classical Cats: How I got tricked by 28-year-old defensive programming
Every now and then, when working on ScummVM’s Director engine, I run across a disc that charms me so much I just have to get it working right away....
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A tiny language called Z (2013)
A tiny, strict, impure, curried, dynamically typed (although that may change), partially applied language with rather peculiar syntax.
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Python Patterns (2013)
python patterns diagram Over the past few months a number of people have come to me for guidance regarding various aspects of Python development, so I ...
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Coding Machines
After a minute Patrick came back with a small dusty cardboard box. Dave and I stared as Patrick opened it and pulled out a network switch, the old kind from the days when they were made with metal cases. He plugged in the power supply and carefully straightened out a CAT -5 cable to hook the switch up to our network…
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Reprogramming a $13 consumer wifi-enabled outlet
The HTML5 Herald
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Why is memory reclamation so important for lock-free algorithms?
As it so happens, object lifetime tracking (or Memory Reclamation as I prefer to call it) is the current most difficult open problem in sha...
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Interactive Code Cells
Like Jupyter notebooks, but for any language.