Dimitry Golubovsky wrote:
Does there exist a generalized version of the `words' function i. e. one that breaks an arbitrary list into parts by an arbitrary predicate?
splitAt is not what I need.
I had to write my own:
-- A version of words, but works with any lists on any predicate.
parts pred s = case dropWhile pred s of [] -> [] s' -> w : parts pred s'' where (w, s'') = break pred s'
(just by parameterizing `words' found in Data.List with a predicate passed as a parameter).
In case such a function already exists, what is its name?
In Data.PackedString are splitPS and splitWithPS. splitPS :: Char -> PackedString -> [PackedString] The splitPS function splits the input string on each occurrence of the given Char. splitWithPS :: (Char -> Bool) -> PackedString -> [PackedString] The splitWithPS function takes a character predicate and splits the input string at each character which satisfies the predicate.