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Module type Map.OrderedType

module type OrderedType = sig .. end
Input signature of the functor Map.Make.
type t
The type of the map keys.
 
val compare : t -> t -> int
A total ordering function over the keys. This is a two-argument function f such that f e1 e2 is zero if the keys e1 and e2 are equal, f e1 e2 is strictly negative if e1 is smaller than e2, and f e1 e2 is strictly positive if e1 is greater than e2. Example: a suitable ordering function is the generic structural comparison function Pervasives.compare.