On Thu, Mar 3, 2011 at 12:33 AM, Mark Lentczner
mark.lentcz...@gmail.com wrote:
To make up for my total misunderstanding of what you were asking
before, I hereby offer you the Plumbing module, available here:
https://bitbucket.org/mtnviewmark/haskell-playground/src/2d022b576c4e/Plumbing.hs
On Wed, Mar 2, 2011 at 12:00 AM, Stephen Tetley
stephen.tet...@gmail.com wrote:
Maybe you've invented the ApoPrelude?
If I were doing it I'd probably code them in terms of an apomorphism -
unfoldr with flush. Unlike regular unfoldr which discards the final
state, an apomorphism uses the final
To make up for my total misunderstanding of what you were asking
before, I hereby offer you the Plumbing module, available here:
https://bitbucket.org/mtnviewmark/haskell-playground/src/2d022b576c4e/Plumbing.hs
With it, I think you can construct the kinds of pipelines you describe
with the
Maybe you've invented the ApoPrelude?
If I were doing it I'd probably code them in terms of an apomorphism -
unfoldr with flush. Unlike regular unfoldr which discards the final
state, an apomorphism uses the final state to produce the tail of the
output list. See Jeremy Gibbons paper Streaming
I have a few functions for operating on lists that take continuations:
-- | Like takeWhile but with a continuation, so you can chain takes without
-- copying.
takeWhileThen :: (a - Bool) - ([a] - [a]) - [a] - [a]
takeWhileThen _ _ [] = []
takeWhileThen f cont (x:xs)
| f x = x : takeWhileThen
