jxxcarlson / elm-tree-builder / Tree.Lib

Utility functions. preOrder and levelOrder transform Tree a to List a, where the nodes are listed in the given order. Given Tree a, the edges function returns List (a,a), where a pair (p,q) is in the returned list if and only if q is a child of p.

preOrder : Tree a -> List a

levelOrder : Tree a -> List a

edges : Tree a -> List ( a, a )

Return a list of pairs (x,y) where

    - x and y are of type a
    - (x,y) is in the list if and only if y is a chiild of x.