[Haskell-cafe] confusion with fgl and ghc6
bremner at unb.ca
Sun Jul 13 14:07:31 EDT 2008
I don't know whether this is a bug in fgl, in ghc, or I'm just confused.
Any ideas? This is on debian/sid.
GHCi, version 6.8.2: http://www.haskell.org/ghc/ :? for help
Loading package base ... linking ... done.
Prelude> import Data.Graph.Inductive.Example
Prelude Data.Graph.Inductive.Example> star 6
Ambiguous type variable `gr' in the constraint:
arising from a use of `star' at <interactive>:1:0-5
Probable fix: add a type signature that fixes these type variable(s)
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