3
val create : unit -> 'a t
4
val add : 'a -> 'a t -> unit
5
val push : 'a -> 'a t -> unit
10
val clear : 'a t -> unit
11
val copy : 'a t -> 'a t
12
val is_empty : 'a t -> bool
13
val length : 'a t -> int
14
val iter : ('a -> unit) -> 'a t -> unit
15
val fold : ('b -> 'a -> 'b) -> 'b -> 'a t -> 'b
16
val transfer : 'a t -> 'a t -> unit