module Tree:sig..end
type ('a, 'cmp) t
Tree.t contains just the tree data structure that a set is based on, without
including the comparator. Accordingly, any operation on a Tree.t must also take
as an argument the corresponding comparator.include Creators_and_accessors2_with_comparator
val sexp_of_t : ('a -> Sexplib.Sexp.t) ->
('cmp -> Sexplib.Sexp.t) -> ('a, 'cmp) t -> Sexplib.Sexp.t