The personal website of Daniel Brice, PhD.
I’ll be using this space to muse about Math and coding and games, mostly.
Latest Blog Posts
Some Haskell classesmore...
class Myclass aadmit 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.
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.more...
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.more...
Recently to a friend, I quipped that it’d be a good exercise towards demystifying Haskell’smore...
IOtype to write a comparable
This will be a small post where I share some techniques we found for getting some additional type safety from our Scala case classes. We’ll look at case classes that validate their input data and we look at case classes that allow selecting from among multiple instances of the same typeclass.more...