The personal website of Daniel Brice, PhD.

Made with Jekyll and hosted on GitHub Pages.

I’ll be using this space to muse about Math and coding and games, mostly.

Latest Blog Posts

• Jan 19, 2022

  Haskell GoF - Abstract Factory

  The beginning of a series wherein we show how to implement selected design patterns from Design Patterns: Elements of Reusable Object-Oriented Software. This week, we take a look at the venerable Abstract Factory pattern.

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• Apr 20, 2021

  Of function instances and abstract syntax

  Some Haskell classes class Myclass a admit an instance for functions instance Myclass a => Myclass (x -> a) based on the instance for a. All of these instances have a few things in common: (1) they implement the class methods in a straightforward way as mymethod f = \x -> mymethod (f x), and (2) they are polarizing among Haskell practitioners. The sequel is a case study of why I find such instances compelling and useful.

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• Nov 21, 2020

  Proving My Point

  A coworker of mine has been kind enough to spend his scant spare time guiding a small group of future Haskellers through Hutton’s Programming in Haskell, assigning weekly problems and judging the solutions submitted along the way. What follows here today¹ is my smart-ass solution to my colleague’s Problem 1.

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• Jun 12, 2020

  Simple Linear Regression in One Pass

  I recently had to implement linear regression for a hobby project. As I’d never learned how to calculate it, this was a great opportunity to learn. As I dug in, I saw that I’d need to be making two passes over my data. Let’s see if we can fix that.

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• Jan 1, 2020

  The IO Rosetta Stone

  Recently to a friend, I quipped that it’d be a good exercise towards demystifying Haskell’s IO type to write a comparable IO type in your favorite language. In this blog post, I do that for Java, Javascript, Python, and Scala.

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For more blog posts, see the full table of contents.