Re: [Haskell-cafe] Separate a string into a list of strings

"Jared Updike" writes:

On 6/12/06, Neil Mitchell wrote:

...

I tend to use the module TextUtil (or Util.Text) from Yhc for these kind of string manipulations:

Funny. I have a module called Useful.hs with some of these same sorts of functions. (coming from Python where I used .split(',') and .replace('\r', '') and such a lot):

Clifford Beshers writes:

Here is a solution using the Posix regex module.

In addition, there are similar things in John Goerzen's MissingH, and in FPS. It'd be nice if the Data.List interface included these. Seems there is a two-d matrix, one is the split criterion (matching element, number of elements, boolean function on elements), the other is the return type (split off one (-> ([a],[a])) or split up the whole string (-> [[a]])). Arbitrarily¹ naming the former 'split' and the latter 'break', you could have something like: split :: a -> [a] -> ([a],[a]) splitAt :: Int -> [a] -> ([a],[a]) splitWhen :: (a -> Bool) -> [a] -> ([a],[a]) break :: a -> [a] -> [[a]] breakAt :: Int -> [a] -> [[a]] breakWhen :: (a -> Bool) -> [a] -> [[a]] -k ¹ Well, perhaps not quite, it seems more natural to me to 'split in two' and 'break into pieces'. -- If I haven't seen further, it is by standing in the footprints of giants