> I believe Haskell has these as an extension Not really ... Haskell has libraries that claim to implement this but we Haskellers have to admit Haskell's suppo

> I believe Haskell has these as an extension Not really ... Haskell has libraries that claim to implement this but we Haskellers have to admit Haskell's support for row types is pretty poor. A Clojurist's objections to Haskell on those grounds are valid (in practice though not in theory).