Yves Parès wrote: >> Is there some litterature expliciting in a less empiric way than I did the >> differences like this between data and newtype? I've never come against >> such documentation through all my learning of Haskell, yet I think it's an >> important point.
Roman Cheplyaka wrote: > See the Haskell report, section 3.17.2 "Informal Semantics of Pattern > Matching" [1]. And section 4.2.3 of the report [2] addresses exactly your points very explicitly: "A type created by newtype differs from an algebraic datatype in that... The following examples clarify the differences between data (algebraic datatypes), type (type synonyms), and newtype (renaming types)..." Regards, Yitz [1] http://www.haskell.org/onlinereport/haskell2010/haskellch3.html#x8-600003.17.2 [2] http://www.haskell.org/onlinereport/haskell2010/haskellch4.html#x10-740004.2.3 _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
