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Every blog post that took off on Hacker News, ranked by the votes of its best submission. 107 posts.

Math & Algorithms
2014
69

Categories from scratch

Note The latest version of this document can be found online at https://dr-knz.net/categories-from-scratch.html. Alternate formats: Source, PDF. Prologue The concept of category from mathematics happens to be useful to computer programmers in many ways. Unfortunately, all “good” explanations of categories so far have…