pub fn bfs_arranged<'scope, N, Tr>(
edges: Arranged<'scope, Tr>,
roots: VecCollection<'scope, Tr::Time, N>,
) -> VecCollection<'scope, Tr::Time, (N, u32)>where
N: ExchangeData + Hash,
Tr: for<'a> TraceReader<Key<'a> = &'a N, Val<'a> = &'a N, Diff = isize> + Clone + 'static,Expand description
Returns pairs (node, dist) indicating distance of each node from a root.