package containers

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package containers
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Helpers for references

  • since 0.9
type 'a printer = Format.formatter -> 'a -> unit
type 'a ord = 'a -> 'a -> int
type 'a eq = 'a -> 'a -> bool
type 'a iter = ('a -> unit) -> unit
type 'a t = 'a ref
val map : ('a -> 'b) -> 'a t -> 'b t

Transform the value.

val create : 'a -> 'a t

Alias to ref.

val iter : ('a -> unit) -> 'a t -> unit

Call the function on the content of the reference.

val update : ('a -> 'a) -> 'a t -> unit

Update the reference's content with the given function.

val incr_then_get : int t -> int

incr_then_get r increments r and returns its new value, think ++r.

  • since 0.17
val get_then_incr : int t -> int

get_then_incr r increments r and returns its old value, think r++.

  • since 0.17
val swap : 'a t -> 'a t -> unit

swap t1 t2 puts !t2 in t1 and !t1 in t2.

  • since 1.4
val protect : 'a t -> 'a -> (unit -> 'b) -> 'b

protect r x f sets r := x; calls f(); restores r to its old value; and returns the result of f().

  • since 3.10
val compare : 'a ord -> 'a t ord
val equal : 'a eq -> 'a t eq
val to_list : 'a t -> 'a list
val to_iter : 'a t -> 'a iter
  • since 3.0
val pp : 'a printer -> 'a t printer