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Castlevania III Password Algorithm
An explanation of the Castlevania III password algorithm, including name hashes, payload encoding, decoding, special names, and all valid passwords.
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Design Issues in LLVM IR
On the whole, LLVM has a well-designed intermediate representation (IR), which is specified in the language reference . However, there are a number of areas where design mistakes have been made. And while the LLVM project is generally open to addressing such issues, mistakes in core IR design tend to be firmly…
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Ditch your version manager
Try Nix and don't look back.
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Learning that you can use unions in C for grouping things into namespaces
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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Using Flutter to build a native-looking desktop app for macOS and Windows
How to create an adaptive app for desktops with Flutter, with a different UI design for macOS and Windows, while using a single codebase.
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8 Bits Are Enough for a Version Number
As was pointed out to us stable kernel maintainers last week, the overflow of the .y release number was going to happen soon, and our proposed …
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The Evolutions of Lambdas in C++14, C++17 and C++20
Expressive code in C++
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PureScript and Haskell
Two years ago, I starting learning PureScript. I had been intrigued by purely functional programming for some time but had failed to learn Haskell once or twice. PureScript seemed to be a kinder, gentler introduction to this world while retaining the fundamental properties of pureness that made Haskell intriguing to…
550
How Git servers work, and how to keep yours secure
Disclaimer: I’m no sysadmin extraordinaire, please please please correct me if there’s something blatantly wrong here:
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Clojure Core
Earlier today Rich Hickey let the cat out of the bag that I’m joining the Clojure Core development team.
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Scala projects are difficult to maintain
Scala is a powerful programming language that can make certain small teams hyper-productive.
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When zero cost abstractions aren't zero cost
Rust is built around the concept of “zero cost abstraction”. The idea is that you can write human-friendly high level code and the compiler will give you for free performance at least as good as any optimized low level code you could have written yourself. With zero cost abstraction, you no longer have to trade off…
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What’s your API’s “Time To 200”?
M'colleague Charles has introduced me to the most spectacular phrase - "Time To 200". That's a measurement of the length of time it takes a new user to go from signing up to your API to getting their first HTTP 200 response. Think about the last time you started using a new API... Fill in a tediously long registration…
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Film simulations from scratch using Python
Disclaimer: The post is more about understanding LUTs and HaldCLUTs and writing methods from scratch to apply these LUTs to an image rather than coming up with CLUTs themselves from scratch. Outlin…
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Replacing my Octopress blog with 200 lines of Babashka
Seven years ago I started writing about my adventures with Clojure. I started using Octopress back then and was still using it until today. Octopress worked great for my blogging purposes and I'm grateful that it existed. However, in recent years I became frustrated with the experience of using it, which is probably…
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Building DigitalOcean's API Gateway
technology blog about ruby, scala, java, golang, software engineering and programming in general
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How does a game engine work? an overview (2016)
Want to develop your own game engine? Here is a nice overview of what you need to implement in order to develop a game engine.
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Most URLs are syntactically valid JavaScript code
Further adventures in JavaScript
564
Finding the Bottom Turtle
Some reflections on trusting trust, and how deep the rabbit hole goes.
565
Full-time open source with Andrew Kelley
Today’s show: How to quit your job and work on open source full time. This story has it all -- balancing side projects and full-time employment, building up enough supports to leave your job, and explaining quitting to your family and friends. And also: what do you do if your project succeeds, and then someone forks…
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Rendering Moana with Swift
Moana (2048×858 pixels, 64 spp) rendered with Gonzales on a Google Cloud Instance with 8 vCPUs and 64GB of memory in roughly 26 hours. Memory usage is about 60GB. (Denoised with OpenImageDenoi…
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Inserting 130M SQLite rows per minute from a scripting language
The other week, I stumbled on the post Inserting One Billion Rows in SQLite Under A Minute , which was a funny coincidence, as I was just in...
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My worst tech interview experience
Everyone in tech seems to have a “terrible tech interview” story. The topic quietly orbits in the ether of our industry and periodically bursts through the a...
570
Decoding the Peloton
From Voltages to "Cadence, Output, and Resistance" TL;DR - I’ve decoded (most of) the protocol that the Peloton bike uses to communicate with its head unit tablet and built a device,...