package dolmen

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package dolmen
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Library
Module
Module type
Parameter
Class
Class type
type key
type t

A map containing values of different types, indexed by key.

val empty : t

Empty map.

val get : inj:'a injection -> key -> t -> 'a option

Get the value corresponding to this key, if it exists and belongs to the same key.

val add : inj:'a injection -> key -> 'a -> t -> t

Bind the key to the value, using inj.

val update : inj:'a injection -> key -> ('a option -> 'a option) -> t -> t

update ~inj k f m updates the value associated with k in m according to f (get ~inj k m). If the result is None, the binding associated with k is removed.

  • since 0.9
val find : inj:'a injection -> key -> t -> 'a

Find the value for the given key, which must be of the right type.

  • raises Not_found

    if either the key is not found, or if its value doesn't belong to the right type.

val cardinal : t -> int

Number of bindings.

val remove : key -> t -> t

Remove the binding for this key.

val mem : inj:_ injection -> key -> t -> bool

Is the given key in the map, with the right type?

val iter_keys : f:(key -> unit) -> t -> unit

Iterate on the keys of this map.

val fold_keys : f:('a -> key -> 'a) -> x:'a -> t -> 'a

Fold over the keys.

Iterators

type 'a iter = ('a -> unit) -> unit
val keys_iter : t -> key iter

All the keys.

val bindings_of : inj:'a injection -> t -> (key * 'a) iter

All the bindings that come from the corresponding injection.

type value =
  1. | Value : ('a injection -> 'a option) -> value
val bindings : t -> (key * value) iter

Iterate on all bindings.