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Aug 1, 2017 at 19:40
A/B testing designs in the world's most popular language learning app: https://firstround.com/review/the-tenets-of-a-b-testing-from-duolingos-master-growth-hacker/ (postpone signup, let users try it!)

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The author of rust-analyzer discussing how language features help or hinder fast IDEs. If you allow `from m import *` you can't analyse files in isolation, and it's even harder in Rust.
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Mar 20, 2026 at 12:02
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Excellent series on Self, both the programming model and the tool chain. I love how opening an inspector on a value (e.g. nil) then shows a link to all occurrences of the value in other open inspectors!
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I bring you a message about a language that has been at the birth of many others, but almost no one knows it. A rumor of a graphical environment offering options like no other, but almost no one using it. I also bring information about a virtual machine supporting reflection almost to infinity, reaching almost half of the operating power of C in numerical calculations in its time, yet today forgotten.
Mar 5, 2026 at 10:49
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I'm still not sure whether a language should include a "kitchen sink linter" like Rust's clippy or have a package oriented "thousand flowers bloom" linter like eslint for JS and TS. Clippy is delightful out of the box but eslint makes it so easy to have project specific lints.