It's funny how much 'everyday coding techniques' varies by field. I've only ever used dynamic programming or min-heaps in programming puzzles.
By contrast, the (obscure?) hare and rabbit technique for linked lists -- pretty well known in lisp implementation circles!
miniblog.
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The TypeScript docs have IDE-like hover types on all the examples, which is really impressive.
I also like how the second example always shows the type of the relevant part, regardless of mouse position. It's clear and mobile friendly.
Screenshot from https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#literal-types

