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Rich Hickey rants about HttpServletRequest in 1080p: Death By Specificity from Clojure Made Simple

A five-minute excerpt of Rich Hickey's Clojure Made Simple talk, with new slides, ranting about HttpServletRequest and specificity. He argues for using generic maps instead of many specific classes and getters.

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Why HN readers recommended it

Cited as the classic rant on maps versus objects in discussions of data modeling and OOP.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
Fred Overflow
Topic
data-oriented design
Format
talk
Level
intermediate
HN recommenders in dataset
5
HN mentions in dataset
14
Recommendation years in dataset
2020–2026

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

  • > Do people actually build large codebases with the 'hash map first' approach? There are a few large projects written in Clojure. I'd say it's a "data first" approach, not uniquely "map first". There's this famous 4 minutes rant by Rich Hickey (the creator of …

    TacticalCoder on Hacker News · 2021-03
    In Clojure from a Schemer's Perspective

  • Rich Hickey "thinks in lisp". For example, he talks about his "maps" data structure (aka association lists). See [VIDEO] Since data and programs are the same thing in lisp you can fluidly shift from one to the other, like I did with "knowledge" vs "rules". …

    daly on Hacker News · 2021-04
    In Languages you must know #10 (Lisp)

  • A classic rant by Rich Hickey: [VIDEO] I say this even though I don’t usually code this way: I think the big benefit for business code is sort of a constrained flexibility. Objects tend to get really big (the alternative is you have a ton …

    travisjungroth on Hacker News · 2023-11
    In

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.

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