Contraction.G
type t
module V : Sig.COMPARABLE
type vertex
= V.t
module E : sig ... end
type edge
= E.t
val empty : t
val add_edge_e : t -> edge -> t
val fold_edges_e : (edge -> 'a -> 'a) -> t -> 'a -> 'a
val fold_vertex : (vertex -> 'a -> 'a) -> t -> 'a -> 'a