I wrote up a toy project in Haskell and profiled it to learn about Haskell’s profiling tools and about profiling code in general. Profiling in Haskell with Stack is super easy; to prove it I’ll walk through the problem I was trying to solve, my slow first solution, and how I used Haskell’s profiling tools to find and fix some egregiously slow parts of the code.
I do the bulk of my code reviews from the command line, especially when reviewing larger changes. I’ve built up a number of tools and config settings that help me dig into the nuances of the code I’m reviewing, so that I can understand it better than if I were just browsing online.
Variables are central1 to programming languages, yet they’re often overlooked. Academic PL theory papers usually take for granted having proper implementations of variables. Most popular languages butcher variables, confusing them with assignables. Despite being taken for granted, implementing substitution on variables is easy to get wrong.
I’ve written in the past (twice) about how to streamline the writing process when using LaTeX. Since then, I’ve found that I enjoy writing even more when I don’t have to reach for LaTeX at all. By reaching first for Markdown, then for LaTeX when necessary, writing is easier and more enjoyable.