package containers

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type elt

Elements that are to be counted

type t
val create : int -> t

A counter maps elements to natural numbers (the number of times this element occurred)

val incr : t -> elt -> unit

Increment the counter for the given element

val incr_by : t -> int -> elt -> unit

Add several occurrences at once

val get : t -> elt -> int

Number of occurrences for this element

val add_seq : t -> elt sequence -> unit

Increment each element of the sequence

val of_seq : elt sequence -> t

of_seq s is the same as add_seq (create ())