include Foldable
type t
The type of the accumlator
type data
The type of the folded in values.
val init : t
The initial value of the accumulator.
val f : t ‑> data ‑> t
The folding function.
include Core.Sexpable with type t := t
val t_of_sexp : Base.Sexp.t ‑> t
val sexp_of_t : t ‑> Base.Sexp.t