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Post #38140 10
I built the RealWorld app in Lean 4

🔸Lean 4 is a functional programming language used to build RealWorld, a Medium clone app. The app's behavior was written down in Lean and tested afterwards, but it does not meet the definition of correctness by construction due to missing proofs for its SQL interactions and C bindings.

2026-10-17 00:25

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