[Haskell-beginners] 'read' throws; why not maybe or either?

[Patrick Redmond]

Thanks all! I was able to make use of readEither to do just what I wanted.

On Tuesday, November 26, 2013, Michael Orlitzky wrote:

> On 11/24/2013 04:49 PM, Patrick Redmond wrote:
> > Is there a variation of 'read' which uses Maybe or Either to handle
> > failure instead of an exception?
>
> readMaybe:
>
>
> http://hackage.haskell.org/package/base-4.6.0.1/docs/Text-Read.html#v:readMaybe
>
>   Prelude> import Text.Read (readMaybe)
>   Prelude Text.Read> readMaybe "Hello, World!" :: Maybe Int
>   Nothing
>   Prelude Text.Read> readMaybe "45" :: Maybe Int
>   Just 45
>
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