Re: [Haskell-cafe] Safe way to parse arguments?

Don Stewart writes:

The main thing is to define a safe read. This will be in the base library soon,

maybeRead :: Read a => String -> Maybe a maybeRead s = case reads s of [(x, "")] -> Just x _ -> Nothing

Then you can pattern match on the failure case as Nothing.

When will it be in the base library? X-Y -- c/* __o/* <\ * (__ */\ <