geiesfolds ( j-s-folds)
Here are the tests.
All this while throwing in some original experiments and links to other functional matters like tuples and continuations.
This project is presented at:
The main idea is to present a series of examples of increasing difficulty, illustrating new FP techniques along the way.
In the case of fold right there are also two original contributions, get n and archiveBuilder (the latter still WIP).
There are a few original examples of fold left in the code, but they aren't yet commented in the blog page. Fold left is easy, though. And there are plenty of sources out there.
DEBITS AND CREDITS
I am in deep debt with:
Graham Hutton - "A tutorial on the universality and expressiveness of fold"
"Real World Haskell", O'Reilly
Any feedback is welcome.
Released under MIT License.