[Haskell-cafe] ANNOUNCE: tie-knot library

Dear Haskellers, I'd like to announce a small library "tie-knot": "Ties the knot" on a given set of structures that reference each other by keys - replaces the keys with their respective values. Takes Map k (v k) and converts into Map k v' where v' is the fixed point of v. Motivation: I needed to assemble a finite-state machine from an external description where each node was described by some identifier. I needed a simple library that would replace all key referencess with the actual values. See https://github.com/ppetr/tie-knot for examples. Hackage: http://hackage.haskell.org/package/tie-knot - Petr Pudlak