module type S = sig .. end
sig
end
include Comparable_intf.S_common
module Map: Core_map.S with type Key.t = t with type Key.comparator = comparator
Core_map.S
with type Key.t = t
with type Key.comparator = comparator
module Set: Core_set.S with type Elt.t = t with type Elt.comparator = comparator
Core_set.S
with type Elt.t = t
with type Elt.comparator = comparator