package tezos-protocol-007-PsDELPH1

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The generic signature of a data set accessor (a set of values bound to a specific key prefix in the hierarchical (key x value) database).

type t
type context = t
type elt

The type of elements.

val mem : context -> elt -> bool Lwt.t

Tells if a elt is a member of the set

val add : context -> elt -> Raw_context.t Lwt.t

Adds a elt is a member of the set

val del : context -> elt -> Raw_context.t Lwt.t

Removes a elt of the set ; does nothing if not a member

val set : context -> elt -> bool -> Raw_context.t Lwt.t

Adds/Removes a elt of the set

val elements : context -> elt list Lwt.t

Returns the elements of the set, deserialized in a list in no particular order.

val fold : context -> init:'a -> f:(elt -> 'a -> 'a Lwt.t) -> 'a Lwt.t

Iterates over the elements of the set.

val clear : context -> Raw_context.t Lwt.t

Removes all elements in the set