[Haskell-cafe] TagSoup 0.9
Ralph Hodgson
rhodgson at topquadrant.com
Wed May 19 03:05:42 EDT 2010
Hello Neil ,
I was using TagSoup 0.8 with great success. On upgrading to 0.9 I have this
error:
TQ\TagSoup\TagSoupExtensions.lhs:29:17:
`Tag' is not applied to enough type arguments
Expected kind `*', but `Tag' has kind `* -> *'
In the type synonym declaration for `Bundle'
Failed, modules loaded: TQ.Common.TextAndListHandling.
where line 29 is the type declaration for 'bundle' in the following code:
> module TQ.TagSoup.TagSoupExtensions where
> import TQ.Common.TextAndListHandling
> import Text.HTML.TagSoup
> import Text.HTML.Download
> import Control.Monad
> import Data.List
> import Data.Char
> type Bundle = [Tag]
[snip]
> tagsOnPage :: String -> IO(String)
> tagsOnPage url = do
> tags <- liftM parseTags $ openURL url
> let results = unlines $ map(show) $ tags
> return (results)
> extractTags :: Tag -> Tag -> [Tag] -> [Tag]
> extractTags fromTag toTag tags = takeWhile (~/= toTag ) $ dropWhile (~/=
fromTag ) tags
> extractTagsBetween :: Tag -> [Tag] -> [Tag]
> extractTagsBetween _ [] = []
> extractTagsBetween markerTag tags = if startTags == []
> then []
> else [head startTags] ++ (takeWhile (~/= markerTag ) $ tail
startTags)
> where
> startTags = dropWhile (~/= markerTag ) tags
I need to repair this code quickly. I am hoping you can quickly help me
resolve this. Thanks.
Ralph Hodgson,
@ralphtq <http://twitter.com/ralphtq>
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