[Haskell-cafe] folds with escapes
guidog87 at gmail.com
Wed Jul 4 20:27:46 EDT 2007
2007/7/4, Michael Vanier <mvanier at cs.caltech.edu>:
> That's cool -- good point. takeWhile is also trivially defined in terms of foldr:
> > takeWhile p = foldr (\x r -> if p x then x:r else ) 
> Can you do dropWhile in terms of foldr? I don't see how.
I 'm very bad in english, sorry.
Here is a solution....
dropWhile in terms of fordr
Author : Graham Hutton
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