[Haskell-cafe] how to compile this in yhc?
thomas.hartman at db.com
Thu Dec 6 22:03:12 EST 2007
Is there some way to compile the following function in yhc?
works in ghc with glasgow exts deactivated, yhc complains context for
Prelude.read needed (in final line)
readfloat :: String -> Maybe Float
readfloat x | null parse || not (null leftover) = fail $ "myRead: "++x
| otherwise = return v
where parse@((v,leftover):ps) = readsPrec 0 x
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