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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Do any tech streamers try new software live? It'd be a really fun way of doing UX testing.
I'm trying to decide the best voice for PL documentation.
Passive: "`let` can be used with destructuring."
Reader focused: "You can use `let` with destructuring."
Describing the PL: "FooLang supports destructuring with `let`."
Anyone have opinions or best practices?
What are the most popular languages that have used an AST walker for their implementation?
I know Ruby used to do this, but there must be others.
(I'm interested in the lowest PL speed that users will tolerate if you have awesome features.)