Daniel's Blog

Hello!

Welcome to my blog. Here, I write about various subjects, including (but not limited to) functional programming, compiler development, programming language theory, and occasionally video games. I hope you find something useful here!

• Type-Safe Event Emitter in TypeScript

  1067 words, about 6 minutes to read.

  I’ve been playing around with TypeScript recently, and enjoying it too. Nearly all of my compile-time type safety desires have been accomodated by the language, and in a rather intuitive and clean way. . . .

• Approximating Custom Functions in Hugo

  629 words, about 3 minutes to read.

  This will be an uncharacteristically short post. Recently, I wrote about my experience with including code from local files. After I wrote that post, I decided to expand upon my setup. . . .

• Pleasant Code Includes with Hugo

  1822 words, about 9 minutes to read.

  Ever since I started the compiler series, I began to include more and more fragments of code into my blog. I didn’t want to be copy-pasting my code between my project and my Markdown files, so I quickly wrote up a Hugo shortcode to pull in other files in the local directory. . . .

• Advent of Code in Coq - Day 8

  8562 words, about 41 minutes to read.

  Huh? We’re on day 8? What happened to days 2 through 7? Well, for the most part, I didn’t think they were that interesting from the Coq point of view. . . .

• Advent of Code in Coq - Day 1

  3502 words, about 17 minutes to read.

  The first puzzle of this year’s Advent of Code was quite simple, which gave me a thought: “Hey, this feels within reach for me to formally verify! . . .

• A Typesafe Representation of an Imperative Language

  4143 words, about 20 minutes to read.

  A recent homework assignment for my university’s programming languages course was to encode the abstract syntax for a small imperative language into Haskell data types. . . .

• Compiling a Functional Language Using C++, Part 13 - Cleanup

  8232 words, about 39 minutes to read.

  In part 12, we added let/in and lambda expressions to our compiler. At the end of that post, I mentioned that before we move on to bigger and better things, I wanted to take a step back and clean up the compiler. . . .

• How Many Values Does a Boolean Have?

  2079 words, about 10 minutes to read.

  A friend of mine recently had an interview for a software engineering position. They later recounted to me the content of the technical questions that they had been asked. . . .

• Meaningfully Typechecking a Language in Idris, With Tuples

  2220 words, about 11 minutes to read.

  Some time ago, I wrote a post titled Meaningfully Typechecking a Language in Idris. I then followed it up with Meaningfully Typechecking a Language in Idris, Revisited. . . .

• Time Traveling In Haskell: How It Works And How To Use It

  4283 words, about 21 minutes to read.

  I recently got to use a very curious Haskell technique in production: [note: As production as research code gets, anyway! . . .