base
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package base
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include Container.S1_phantom_invariant
type ('a, 'phantom) t
val length : (_, _) t -> int
val is_empty : (_, _) t -> bool
val iter : ('a, _) t -> f:('a -> unit) -> unit
val fold : ('a, _) t -> init:'accum -> f:('accum -> 'a -> 'accum) -> 'accum

fold t ~init ~f returns f (... f (f (f init e1) e2) e3 ...) en, where e1..en are the elements of t.

val fold_result : ('a, _) t -> init:'accum -> f:('accum -> 'a -> ('accum, 'e) Result.t) -> ('accum, 'e) Result.t

fold_result t ~init ~f is a short-circuiting version of fold that runs in the Result monad. If f returns an Error _, that value is returned without any additional invocations of f.

val exists : ('a, _) t -> f:('a -> bool) -> bool

Returns true if and only if there exists an element for which the provided function evaluates to true. This is a short-circuiting operation.

val for_all : ('a, _) t -> f:('a -> bool) -> bool

Returns true if and only if the provided function evaluates to true for all elements. This is a short-circuiting operation.

val count : ('a, _) t -> f:('a -> bool) -> int

Returns the number of elements for which the provided function evaluates to true.

val sum : (module Container.Summable with type t = 'sum) -> ('a, _) t -> f:('a -> 'sum) -> 'sum

Returns the sum of f i for all i in the container.

val find : ('a, _) t -> f:('a -> bool) -> 'a option

Returns as an option the first element for which f evaluates to true.

val find_map : ('a, _) t -> f:('a -> 'b option) -> 'b option

Returns the first evaluation of f that returns Some, and returns None if there is no such element.

val to_list : ('a, _) t -> 'a list
val to_array : ('a, _) t -> 'a array
type ('a, 'cmp) tree
val invariants : (_, _) t -> bool
val mem : ('a, _) t -> 'a -> bool
val add : ('a, 'cmp) t -> 'a -> ('a, 'cmp) t
val remove : ('a, 'cmp) t -> 'a -> ('a, 'cmp) t
val union : ('a, 'cmp) t -> ('a, 'cmp) t -> ('a, 'cmp) t
val inter : ('a, 'cmp) t -> ('a, 'cmp) t -> ('a, 'cmp) t
val diff : ('a, 'cmp) t -> ('a, 'cmp) t -> ('a, 'cmp) t
val symmetric_diff : ('a, 'cmp) t -> ('a, 'cmp) t -> ('a, 'a) Either.t Sequence.t
val compare_direct : ('a, 'cmp) t -> ('a, 'cmp) t -> int
val equal : ('a, 'cmp) t -> ('a, 'cmp) t -> bool
val is_subset : ('a, 'cmp) t -> of_:('a, 'cmp) t -> bool
val are_disjoint : ('a, 'cmp) t -> ('a, 'cmp) t -> bool
type ('a, 'cmp) named
module Named : sig ... end
val fold_until : ('a, _) t -> init:'b -> f:('b -> 'a -> ('b, 'final) Container.Continue_or_stop.t) -> finish:('b -> 'final) -> 'final
val fold_right : ('a, _) t -> init:'b -> f:('a -> 'b -> 'b) -> 'b
val iter2 : ('a, 'cmp) t -> ('a, 'cmp) t -> f:([ `Left of 'a | `Right of 'a | `Both of 'a * 'a ] -> unit) -> unit
val filter : ('a, 'cmp) t -> f:('a -> bool) -> ('a, 'cmp) t
val partition_tf : ('a, 'cmp) t -> f:('a -> bool) -> ('a, 'cmp) t * ('a, 'cmp) t
val elements : ('a, _) t -> 'a list
val min_elt : ('a, _) t -> 'a option
val min_elt_exn : ('a, _) t -> 'a
val max_elt : ('a, _) t -> 'a option
val max_elt_exn : ('a, _) t -> 'a
val choose : ('a, _) t -> 'a option
val choose_exn : ('a, _) t -> 'a
val split : ('a, 'cmp) t -> 'a -> ('a, 'cmp) t * 'a option * ('a, 'cmp) t
val group_by : ('a, 'cmp) t -> equiv:('a -> 'a -> bool) -> ('a, 'cmp) t list
val find_exn : ('a, _) t -> f:('a -> bool) -> 'a
val nth : ('a, _) t -> int -> 'a option
val remove_index : ('a, 'cmp) t -> int -> ('a, 'cmp) t
val to_tree : ('a, 'cmp) t -> ('a, 'cmp) tree
val to_sequence : ?order:[ `Increasing | `Decreasing ] -> ?greater_or_equal_to:'a -> ?less_or_equal_to:'a -> ('a, 'cmp) t -> 'a Sequence.t
val binary_search_segmented : ('a, 'cmp) t -> segment_of:('a -> [ `Left | `Right ]) -> Binary_searchable.Which_target_by_segment.t -> 'a option
val merge_to_sequence : ?order:[ `Increasing | `Decreasing ] -> ?greater_or_equal_to:'a -> ?less_or_equal_to:'a -> ('a, 'cmp) t -> ('a, 'cmp) t -> ('a, 'a) Sequence.Merge_with_duplicates_element.t Sequence.t