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Crystal 0.27.0 released
Crystal 0.27.0 has been released!
New
The latest blog posts to take off on Hacker News. 21,834 posts.
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Visualizing SQL Plan Execution Time with FlameGraphs
Update: I wrote a follow-up article about adding Loop Counters and Row Counts to SQL Plan FlameGraphs. I also show some old examples of “Bookshelf Graph” visualizations there. Check it out after reading this post first. Introduction Brendan Gregg invented and popularized a way to profile & visualize program response…
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Minesweeper in Clojure
As a fun experiment, and to show the basics of clojure development, I implemented a minesweeper clone using clojurescript and p5.js.
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Modeling Message Queues in TLA+
I recently did a corporate TLA+ workshop and some people asked what TLA+ specs look like in practice. If you looked at the most common public examples, you’d probably come away thinking that people only used it for critical consensus algorithms. This is a problem for two reasons: first, it makes it harder to learn…
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A Gentle Visual Intro to Data Analysis in Python Using Pandas
Discussions: Hacker News (195 points, 51 comments), Reddit r/Python (140 points, 18 comments) If you’re planning to learn data analysis, machine learning, or data science tools in python, you’re most likely going to be using the wonderful pandas library. Pandas is an open source library for data manipulation and…
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Two Objects Not Namespaced by the Linux Kernel (2017)
Covers two Linux primitives that are not namespaced by the current set of Linux kernel namespaces.
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Indirection Is Not Abstraction
The concept of abstraction in software development is frequently misunderstood and confused with indirection. This is partially because of the keywords abstract and interface in statically-typed la...
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The Practical Test Pyramid
Find out what kinds of automated tests you should implement for your application and learn by examples what these tests could look like.
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World of Warcraft: one simple line of code can cost you dearly (2016)
A few days ago, a new type of gold/item scam made the rounds. Usually scamming in MMORPGs is done using social engineering techniques, e.g. an attacker sells a fake item code for alleged in-game items like mounts to a potential victim for in-game currency. But this most recent kind of attack does not only involve…
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A single-page app is almost always worse than a multi-page app
Single-page apps are all the rage nowadays. Many praise their vague technical benefits while ignoring tremendous development costs.
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Web Performance 101
Learn how (and why) to make your app faster by optimizing JS, CSS, images/fonts and other things
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Book Review: A Philosophy of Software Design
Jimmy Koppel's in-depth review of John Ousterhout's A Philosophy of Software Design, with case studies on specs, simple APIs, names, and types.
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Confessions of a programmer: I hate code review (2010)
Most of the projects I've been working on today have fairly strict code review policies. My work requires code review on most of our code, and as we bring on an army of interns for the summer, I've been responsible for reviewing lots of code. Additionally, about five months ago BarnOwl, the console-based IM client I…
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Soup – Alan Kay on Objects
As I listen to “Soup” by Can I’m reminded of the time when Alan Kay took some time to post on Hacker News addressing his thoughts and ideas about object-oriented programming. For raw context read the original thread, but in this post I’ll attempt to annotate some of what was posted. For the purpose of this post…
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A fun optimization trick from rsync
From the highly eclectic blog of Mark Dominus
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Systemd is bad parsing
Systemd has a remotely exploitable bug in its DHCPv6 client . That means anybody on the local network can send you a packet and take control...
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Fear, trust and JavaScript: When types and functional programming fail
Explore the challenges and solutions when applying types and functional programming concepts in JavaScript. This insightful blog post delves into the complexities of managing data shape, immutability, and trust in dynamic code, offering practical advice and alternative approaches to enhance code reliability and…
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One Windows Kernel
In this blog post, I will talk about the evolution of the core pieces of the Windows kernel that allows it to transparently scale across a low power NVidia...
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Not Lisp again (2009)
A blog about computers, functional languages, Lisp, and Scheme.
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Qt Design Studio 1.0
Explore the Qt Blog for the latest insights on e.g. Qt Creator, your go-to source for cross-platform development tips and updates.
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Playing Mortal Kombat with TensorFlow.js
While experimenting with enhancements of the prediction model of Guess.js, I started looking at deep learning. I’ve focused mainly on recurrent neural networks (RNNs), specifically LSTM because of their “unreasonable effectiveness” in the domain of Guess.js. In the same time, I started playing with convolutional…
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