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Unicode programming, with examples in C
Most programming languages evolved awkwardly during the transition from ASCII to 16-bit UCS-2 to full Unicode. They contain internationalization features that often aren’t portable or don’t suffice.
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Why I rewrote the mesh generator of Dust3D from Rust to C++
Dust3D is a free, open source low poly 3D modeling tool for video games and 3D printing. Features sketch-to-mesh, auto-rigging, procedural animation, and single-tool GLB/FBX export.
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Idiomatic Monads in Rust
A pragmatic new design for high-level abstractions Monads (and, more generally, constructs known as “higher kinded types”) are a tool for high-level abstraction in programming languages1. Historically, there has been a lot of debate inside (and outside) the Rust community about whether monads would be a useful…
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The Principles of Versioning in Go
This blog post is about how we added package versioning to Go, in the form of Go modules, and the reasons we made the choices we did. It is adapted and updated from a talk I gave at GopherCon Singapore in 2018 .
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How Many Type Parameters Can a Java Method Have?
and this made me wonder how many type parameters a method could have. As far as I can tell, the Java Language specification says nothing about this question. 1
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Minimum Viable Phoenix
Let’s walk through the process of building a dead simple Phoenix application from the ground up.
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Write Junior Code
A plea to Haskellers everywhere.
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Alan Kay and OO Programming
Dr. Alan Kay invented the term "OO Programming", but he states that modern OO programming isn't what he meant. What did he mean?
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Shenandoah GC in production: experience report
Update: I've made several edits to the post since Aleksey Shipilëv was kind enough to suggest many corrections and improvements.If you closely follow JVM development scene, you've probably noticed ...
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Why a mock doesn’t work
Mocking is a powerful technique for isolating tests. But yours isn’t working. Why!?
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Reed Solomon codes are cool
thoughts
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Working with GitHub Actions
GitHub Actions are still in beta and are changing quickly. But if you are looking to get started the possibilities are endless.
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Writing an OS in Rust: Testing
This post explores unit and integration testing in no_std executables. We will use Rust’s support for custom test frameworks to execute test functions…
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A hiring test I'd like to run
(For the avoidance of doubt, I have nothing to do with hiring at my employer. This test is probably deeply problematic in ways you'll angrily Tweet me about.) I'd like to tell you a story! I am a teenager applying for temp jobs. It's the late 1990s and the temp agency have asked me to take a Microsoft Office test. You…
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A Million Digits of Pi in 9 Lines of JavaScript
"Big integers" have landed in Javascript, at least in Firefox and Chrome. One of my favorite things to do with high precision arithmetic is to calculate digits of π. From scratch, that is, using only addition, subtraction, multiplication, and division.
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Notes on Type Layouts and ABIs in Rust
Over the years I’ve found myself with a weird amount of knowledge about how types and ABIs in Rust work, and I wanted to write it all down in one place so that… it’s written down in one place. Much of this information can or should be found in the Rust Language Reference and the Rustonomicon .
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Crafting Interpreters: Calls and Functions
Any problem in computer science can be solved with another level of indirection. Except for the problem of too many layers of indirection.
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The 80/24 Rule
Write small blocks of code. How small? Here's how small.
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UTF-8 String Indexing Strategies
When designing or, in some cases, implementing a programming language with built-in support for Unicode strings, an important decision must be made about how to represent or encode those strings in memory. Not all representations are equal, and there are trade-offs between different choices.
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It’s Time for a Modern Synthesis Kernel
I had a student (Fred Smith) who worked on extensions to Popcorn (the predecessor to Cyclone) that supported run-time code generation in a lightweight fashion. Here’s a paper describing part of the system: https://ecommons.cornell.edu/handle/1813/5812 . Fred’s thesis had a bunch more.
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Some things that might help you make better software (2016)
Assuming you're in the unusual position of actually having budget for quality, here's what to spend it on.
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RISC-V from scratch 2: Hardware layouts, linker scripts, and C runtimes
A post describing how C programs get to the main function. Devicetree layouts, linker scripts, minimal C runtimes, GDB and QEMU, basic RISC-V assembly, and other topics are reviewed along the way.
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ML from Scratch, Part 2: Logistic Regression (2018)
In this second installment of the machine learning from scratch we switch the point of view from regression to classification: instead of estimating a number, we will be trying to guess which of 2 possible classes a given input belongs to. A modern example is looking at a photo and deciding if its a cat or a dog.
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Book Review: Designing Data-Intensive Applications
What a great book Designing Data-Intensive Applications is! It covers databases and distributed systems in clear language, great detail and without any fluff. I particularly like that the author Ma…
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R is a joy if you treat it like Awk
Derek's Personal Portfolio/Blog