Open alf239 opened 9 years ago
https://www.st.cs.uni-saarland.de/edu/seminare/2005/advanced-fp/docs/huet-zipper.pdf
The Zipper, by Gérard Huet: Used in many other data structures (such as Hinze & Paterson's finger trees), this is a way of turning a data structure inside-out.
https://www.st.cs.uni-saarland.de/edu/seminare/2005/advanced-fp/docs/huet-zipper.pdf