ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Standard Haskell ADTs treat every expression node the same, so type errors hide until runtime. GADTs index constructors by return type, letting the compiler reject invalid DSL operations before you run the program.
OCaml GADTs let you encode type invariants directly in the type system, turning runtime pattern‑matching errors into compile‑time guarantees. This guide walks through the syntax, a typed expression tree example, trade‑offs, and practical adoption tips.
Guidance on choosing polymorphic variants versus ADTs/GADTs for heterogeneous data in OCaml, with a JSON‑like example and verification steps.
haskell
ocaml