Parameter `Dfs.1-G`

val is_directed : bool

type t

module V : Sig.COMPARABLE

val iter_vertex : (V.t -> unit) -> t -> unit: It is enough to iter over all the roots (vertices without predecessor) of the graph, even if iterating over the other vertices is correct.

val fold_vertex : (V.t -> 'a -> 'a) -> t -> 'a -> 'a: It is enough to fold over all the roots (vertices without predecessor) of the graph, even if folding over the other vertices is correct.

val iter_succ : (V.t -> unit) -> t -> V.t -> unit
val fold_succ : (V.t -> 'a -> 'a) -> t -> V.t -> 'a -> 'a