flatten package:containers

flatten :: Tree a -> [a]
containers Data.Tree
Returns the elements of a tree in pre-order. 
flatten == Data.Foldable.toList

a
/ \    => [a,b,c]
b   c

Examples

flatten (Node 1 [Node 2 [], Node 3 []]) == [1,2,3]
flattenSCC :: SCC vertex -> [vertex]
containers Data.Graph
The vertices of a strongly connected component. flattenSCC = toList . flattenSCC1. This function is retained for backward compatibility, flattenSCC1 has the more precise type.
flattenSCC1 :: SCC vertex -> NonEmpty vertex
containers Data.Graph
The vertices of a strongly connected component.
flattenSCCs :: [SCC a] -> [a]
containers Data.Graph
The vertices of a list of strongly connected components.