[Haskell-cafe] a problem about Regex in Real World Haskell

[wolf python london]

On 13 November 2010 21:46, Daniel Fischer <daniel.is.fischer at web.de> wrote:
> On Saturday 13 November 2010 03:26:46, wolf python london wrote:
>> hi ,folks ,
>>
>> I'm a newbie of haskell  and learn haskell using the textbook "Real
>> World Haskell".
>>
>> in the page 201,
>>
>> ghci> "good food" =~ ".ood" :: [String]
>
> Should be
>
> "good food" =~ ".ood" :: [[String]]
>
it works!

> I think. I don't know if it was an error when the book was written or the
> regex libs changed.
>
I think so . as
ghci> pack "good food" =~ ".ood" ::[ByteString]

doesn't work ,either, but
ghci>pack "good food" =~ ".ood"::[[ByteString]]
[["good"],["food"]]

works~~





>>
>> my output is here https://gist.github.com/675024
>> it doesn't match what the textbook gives . And I found the ebook of
>> Real World Haskell doesn't match it ,either(just like my output ) .
>> I was wondering How I can fix this problem about Regex.
>>
>> much thanks ~
>
>



-- 
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wolf python london(WPL)
Do as you soul should do !
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