On 13 November 2010 21:46, Daniel Fischer 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 ~

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