[Haskell-cafe] hackage-cabal.tar.gz error

I've installed hoogle and when i type hoogle data, this comes out Extracting tarball... gzip: ../hackage-cabal.tar.gz: invalid compressed data--format violated hoogle: System command failed: gzip --decompress --force ../hackage-cabal.tar.gz What is going wrong? -- View this message in

[Haskell-cafe] Monad Laws and Do Notation

I've got this expression expression = do w - hello y - to you return w I wanna know how can I reduce it using monad laws -- View this message in context: http://haskell.1045720.n5.nabble.com/Monad-Laws-and-Do-Notation-tp4828598p4828598.html Sent from the Haskell -