Module type Sig.WEIGHT

module type WEIGHT = sig .. end
Signature for edges' weights.

type edge 
Type for graph edges.
type t 
Type of edges' weights.
val weight : edge -> t
Get the weight of an edge.
val compare : t -> t -> int
Weights must be ordered.
val add : t -> t -> t
Addition of weights.
val zero : t
Neutral element for Sig.WEIGHT.add.