CurrentVarEqConstrSys.S
include module type of struct include S end
type v = S.v
type d = S.d
module Var = S.Var
Variables must be hashable, comparable, etc.
module Dom = S.Dom
Values must form a lattice.
val sys_change : (v -> d) -> v sys_change_info
Compute incremental constraint system change from old solution.
val system : S.v -> ((S.v -> S.d) -> (S.v -> S.d -> unit) -> S.d) option