Best of 2023

The blog posts Hacker News loved most in 2023. 6,299 posts.

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5377

Four Kinds of Optimisation

Premature optimisation might be the root of all evil, but overdue optimisation is the root of all frustration. No matter how fast hardware becomes, we find it easy to write programs which run too slow. Often this is not immediately apparent. Users can go for years without considering a program’s performance to be an…

5382

M.U.L.E. 40th Anniversary Special

Written and copyrighted by Christian A. Schiller , World of M.U.L.E. curator, with contributions from Andrew Dieffenbach, M.U.L.E. Online developer. No reprint without permission. Happy to get feedback on this feature, either via the contact form or one of the following social media accounts: Facebook , Twitter or…

5392

Algebraic graph calculus (2021)

We describe a graph-theoretic analogue of vector calculus. The linear operators of vector calculus (gradient, divergence, laplacian) correspond to the matrices naturally associated to graphs (incidence matrix, adjacency matrix). This analogy is useful for formalizing the discretization of some problems in image and…

5400

Queues should be empty

I’ve been writing a pubsub listener for work recently and had this silly “shower thought”: the ideal queue should be empty. Why? If the queue is not empty, it means that whatever job is consuming from the queue is not keeping up with messages coming into it. Ok, then if queues are supposed to be empty, then what are…