CCRefHelpers for references
val create : 'a -> 'a tAlias to ref.
val iter : ( 'a -> unit ) -> 'a t -> unitCall the function on the content of the reference.
val update : ( 'a -> 'a ) -> 'a t -> unitUpdate the reference's content with the given function.
val incr_then_get : int t -> intincr_then_get r increments r and returns its new value, think ++r.
val get_then_incr : int t -> intget_then_incr r increments r and returns its old value, think r++.
val to_list : 'a t -> 'a list