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Common Mistakes and Missed Optimization Opportunities in SQL
Made by Developers and Non-Developers
New
The latest blog posts to take off on Hacker News. 14,543 posts.
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Functional Imperative Programming with Elixir (2018)
Stuff about things
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Myths Programmers Believe about CPU Caches (2018)
As a computer engineer who has spent half a decade working with caches at Intel and Sun, I’ve learnt a thing or two about cache-coherency. This was one of the hardest concepts to learn back in coll…
7595
Beating C with 70 lines of Go
Writing a faster wc utility in Go
7596
The Firefox UI Is Now Built with Web Components
Open Source, Web Development, and more
7597
Code Pages, Character Encoding, Unicode, UTF-8 and the BOM [video]
OK, fine maybe they DID teach you this in class. But, you'd be surprised how ...
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Clang Format Tanks Performance
Can using clang-format make your code slower? Kind of.
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Algebraic Data Types: Things I wish someone had explained about FP
Algebraic data types and algebraic data structures sound similar. It’s like they ought to be the same thing. But they’re not. They both have ‘algebraic’ in the name, so it’s confusing. I got them mixed up at times. Others have too. But, they’re different concepts. Understanding the difference will help if you’re…
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Goroutines and APIs
Goroutines are a unusual and powerful programming language feature, so they are a tempting toy to play with, and they get a bit overused.
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WebWindow, a cross-platform webview library for .NET Core
Steve Sanderson's Blog
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Programmer’s Guide to Performance Analysis and Tuning on Modern CPUs
They say “performance is king’… It was true a decade ago and it certainly is now. With more and more data the world generates each day, we need more and more computing power to process it. It used to be the case that some SW vendors preferred to wait for a new generation of HW to speed up their application and did not…
7604
Understanding Serde
Serde is one of the most popular Rust crates, and deservedly so. If you aren't familiar, Serde describes itself as "a framework for serializing and deserializing Rust data structures efficiently and generically." What is most impressive to me is how robust the Serde data model has proven to be, allowing it to support…
7605
“What Alan Kay Got Wrong About Objects”
One of the anonymous reviewers of my recently published Storage Combinators paper ( pdf ) complained that hiding disk-based, remote, and lo...
7606
Writing userspace USB drivers for abandoned devices
I recently found some USB devices on eBay (Epiphan VGA2USB LR) that could take VGA as input and present the output as a webcam. Given that I was keen on the idea of not needing to lug out a VGA monitor ever again and there was claimed Linux support I took the risk and bought the whole job lot for about £20 (25 USD).
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Building a 64-bit aarch64 kernel and userspace for the Raspberry Pi 4
I’ve recently been tinkering around with using a Raspberry Pi as a desktop computer. The Pi 4 is fairly powerful; very sufficient for web browsing, audio, video, and terminal use for programming.
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The Configuration Complexity Curse
Why managing configuration has become so complex and how data configuration languages like CUE offer a path forward.
7609
The Value in Go’s Simplicity
After using Go for a couple years, I’ve really come to appreciate its simplicity. I started writing Go at work a couple months ago, and have found it really easy to iterate on – much more so than Python and Java.
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The 80/24 Rule
Write small blocks of code. How small? Here's how small.
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Build Your Own React
We are going to rewrite React from scratch. Step by step. Following the architecture from the real React code but without all the…
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Announcing .NET Jupyter Notebooks
Jupyter Notebooks has been the significant player in the interactive ...
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Floating point oddity
Code that shows how floating point arithmetic can go wrong, and how C and C++ can return different results for similar code.
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My Python Development Environment, 2020 Edition
<p>For years I’ve noodled around with various setups for a Python development environment. A couple of years ago <a href="https://jacobian.org/2018/feb/21/python-environment-2018/">I wrote about a setup I finally liked</a>; this is an update to that post.</p> <p>Bad news: this stuff still isn’t stable, and…
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When your data doesn’t fit in memory: the basic techniques
You can process data that doesn’t fit in memory by using four basic techniques: spending money, compression, chunking, and indexing.
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Three of the Hundred Falsehoods CS Students Believe
Earlier this year, many people were passing around this article about "re-learning how to be yourself online". Near the end the author reaches a set of questions that are motivating him:
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My Favorite Programming Problem to Teach: Digit Length
A function to return the number of digits in an input (natural) number provides many learning opportunities for a new programmer
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Audio Processing for Dummies
In my spare time I’m an emergency services volunteer, and one of the tasks our unit has is to run the radio network and keep track of what’s happening. This can be a pretty stressful job, especially when there’s lots of radio traffic, and it’s not unusual to miss words or entire transmissions. To help with a personal…
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Rust 2020: GUI and Community
In response to the call for blogs about the vision for Rust for 2020, I’m going to write about GUI. I believe the time is right for a native GUI toolkit written in Rust, and that such a thing would fill a very important niche. There is a demand for performance (which, to me, includes startup time, RAM footprint, and…