package opam-core

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Sets with extended interface and infix operators

include Stdlib.Set.S
type elt
type t
val empty : t
val is_empty : t -> bool
val mem : elt -> t -> bool
val add : elt -> t -> t
val singleton : elt -> t
val remove : elt -> t -> t
val union : t -> t -> t
val inter : t -> t -> t
val diff : t -> t -> t
val compare : t -> t -> int
val equal : t -> t -> bool
val subset : t -> t -> bool
val iter : (elt -> unit) -> t -> unit
val fold : (elt -> 'a -> 'a) -> t -> 'a -> 'a
val for_all : (elt -> bool) -> t -> bool
val exists : (elt -> bool) -> t -> bool
val filter : (elt -> bool) -> t -> t
val partition : (elt -> bool) -> t -> t * t
val cardinal : t -> int
val elements : t -> elt list
val min_elt : t -> elt
val min_elt_opt : t -> elt option
val max_elt : t -> elt
val max_elt_opt : t -> elt option
val choose : t -> elt
val split : elt -> t -> t * bool * t
val find_first : (elt -> bool) -> t -> elt
val find_first_opt : (elt -> bool) -> t -> elt option
val find_last : (elt -> bool) -> t -> elt
val find_last_opt : (elt -> bool) -> t -> elt option
val to_seq_from : elt -> t -> elt Stdlib.Seq.t
val to_seq : t -> elt Stdlib.Seq.t
val add_seq : elt Stdlib.Seq.t -> t -> t
val of_seq : elt Stdlib.Seq.t -> t
val map : (elt -> elt) -> t -> t
val is_singleton : t -> bool
val choose_one : t -> elt

Returns one element, assuming the set is a singleton. Raises Not_found on an empty set, Failure on a non-singleton.

val choose_opt : t -> elt option
val of_list : elt list -> t
val to_string : t -> string
val to_json : t -> OpamJson.t
val of_json : OpamJson.t -> t option
val find : (elt -> bool) -> t -> elt
val find_opt : (elt -> bool) -> t -> elt option
val safe_add : elt -> t -> t

Raises Failure in case the element is already present

val fixpoint : (elt -> t) -> t -> t

Accumulates the resulting sets of a function of elements until a fixpoint is reached

val map_reduce : ?default:'a -> (elt -> 'a) -> ('a -> 'a -> 'a) -> t -> 'a

map_reduce f op t applies f to every element of t and combines the results using associative operator op. Raises Invalid_argument on an empty set, or returns default if it is defined.

module Op : sig ... end
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