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Print Debugging Should Go Away
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
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The latest blog posts to take off on Hacker News. 14,541 posts.
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CSS Tips
26 CSS tips and tricks with live demos: text-overflow ellipsis, line-clamp, position: sticky, scroll snap, gradient text, CSS-only modals and tooltips.
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Red and blue functions are a good thing
By avoiding effect aware functions a language hobbles engineers and makes programs sloppier than they could be.
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API versioning has no “right way” (2017)
API versioning is a really difficult topic, and sometimes seen as a merely religious debate. It’s done differently at different companies, and different teams within different companies often vary. Some folks move from approach A to approach B, and when approach B solves their specific issues they act like
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Heroku-style deployments with Docker and Git tags
In this post I want to explain a new deployment method I came up with while working on drwn.io. I wanted it to meet a few requirements: Simple Based on git tags Zero-downtime Easy rollbacks Creating …
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Has UML died without anyone noticing?
Stuck with Sparx Systems Enterprise Architect? Time to upgrade to Microsoft PowerPoint.
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The joys of creating Xcode project files
Meson's Xcode backend was originally written in 2014 or so and was never complete or even sufficiently good for daily use. The main reason f...
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Parsing Protobuf at 2+GB/S: How I Learned to Love Tail Calls in C
[Note: there have been several developments in this space since thisarticle was published. See A Tail Calling Interpreter For Python (And Other Updates) for...
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Dynamic Programming vs. Divide-and-Conquer (2018)
In this article I’m trying to explain the difference/similarities between dynamic programing and divide and conquer approaches based on two examples - binary search and minimum edit distance (Levenshtein distance)
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Let's stop building APIs around a network hack (2017)
JSON-API has been one of the most popular standards for API development for a while now. It was conceived in 2013, battled through some rather different RC versions (changing drastically as it went), finally stabilizing with v1.0 back in mid-2015. My interest in JSON-API has changed
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Lmgrep: Lucene-based grep-like utility
Introduction to `lmgrep`: what is it and what it isn't. My a motivation to build it.
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The unreasonable effectiveness of print debugging
Trying out this newsletter thing... It's sort of astonishing to think about how much value I've gotten from Twitter over the last few years. At its best, my...
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Remote code execution in Homebrew by compromising the official Cask repository
この記事は日本語でも投稿されています: https://blog.ryotak.net/post/homebrew-security-incident/ (もし日本語が読める場合、筆者は英語がそこまで得意ではないため、日本語の記事を読むことをお勧めします。) (Official blog post about this incident is available here: https://brew.sh/2021/04/21/security-incident-disclosure/) Preface Homebrew project is running a “Vulnerability Disclosure Program”…
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Some useful regular expressions for programmers
In my blog post, My programming setup, I stressed how important regular expressions are to my programming activities. Regular expressions can look intimidating and outright ugly. However, they should not be underestimated. Someone asked for examples of regular expressions that I rely upon. Here a few. It is commonly…
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Converting Markdown to ePub or Mobi Using Pandoc
In this blog post, I will show you the process of combining and converting a list of markdown files into kindle supported ebook (.mobi) format.
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Starting a TypeScript Project in 2021
This is a guide for starting a TypeScript project in 2021 with modern tooling. TypeScript 4 Optionally esbuild to bundle for browsers (and Node.js) Linting with typescript-eslint (tslint is deprecated) Testing with Jest (and ts-jest) Publishing a package to npm Continuous integration (GitHub Actions / GitLab CI)…
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Git from the Bottom Up (2008)
Welcome to the world of Git. I hope this document will help to advance your understanding of this powerful content tracking system, and reveal a bit of the simplicity underlying it — however dizzying its array of options may seem from the outside.
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.NET for Beginners (2020)
Programming, Coffee and Indie Hacking
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Bug in Notepad Involving Asterisk in Title Bar
Back in May 27, 2020 Microsoft published a blog post describing a new feature in Notepad:
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Remote Code Execution Found in CocoaPods
tl;dr CocoaPods is a popular package manager used by lots of iOS apps (among other Swift and Objective-C Cocoa applications). I found a remote code execution...
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Software designers, not engineers: An interview from alternative universe
How very different the world of software is in an alternative universe which has software designers rather than software engineers? In this interview, we look at a range of topics from software design sketching to software designer education, as well as the way in which software designers reshape any problem they are…
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What's in the Box?
Here’s a sentence I find myself saying several times a week: …or we could just box it. There’s two remarkable things about this sentence. The first, is that the advice is very rarely heeded, and in...
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Representing SHA-256 Hashes as Avatars
How to turn 256 bits of entropy into a beautiful, avatar-friendly circular SVG: the Hashvatar.
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Why Specifications Don't Compose
Recently my friend Lars Hupel and I had a discussion on why formal methods don’t compose well. You can read the conversation here. We focused mostly on composing formally-verified code. I want to talk a little more about the difficulties in composing specifications. This is half because it’s difficult for interesting…
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Basic Music Theory in ~200 Lines of Python
A basic introduction to Western music theory using the Python programming language to derive scales, chords, and modes in every key.