n + k patterns should probably not be mentioned. They are considered ugly/bad, are removed from the newest standard and support for them is behind a pragma in G

n + k patterns should probably not be mentioned. They are considered ugly/bad, are removed from the newest standard and support for them is behind a pragma in GHC (NPlusKPatterns) and other compilers. http://hackage.haskell.org/trac/haskell-prime/wiki/RemoveNPlusK http://hackage.haskell.org/trac/haskell-prime/wiki/RemoveNPl... http://hackage.haskell.org/trac/haskell-prime/wiki/NoNPlusKPatterns http://hackage.haskell.org/trac/haskell-prime/wiki/NoNPlusKP...