[Haskell-cafe] take the keywords from a string

[Sara Kenedy]

OK, thank you.

S.
On 6/17/06, Neil Mitchell <ndmitchell at gmail.com> wrote:
> Hi
>
> On 6/18/06, Sara Kenedy <sarakenedy at gmail.com> wrote:
> > Sorry, I am not clear at some point in your answer:
> >
> > 1) The function
> > lex :: String -> [(String,String)]
> > and
> > filter :: (a -> Bool) -> [a] -> [a]
> > So, I did not see how filter can use the list of tuple string of lex.
>
> You can write a function lexList, of type String -> [String], by
> repeatedly calling lex - its not too hard. Once you have this the
> filter will work.
>
> Thanks
>
> Neil
>