Module `Base.Stack`

module type S = sig ... end

include S

type 'a t

val t_of_sexp : (Sexp.t -> 'a) -> Sexp.t -> 'a t
val sexp_of_t : ('a -> Sexp.t) -> 'a t -> Sexp.t

include Invariant.S1 with type 'a t := 'a t

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

fold, iter, find, and find_map visit the elements in order from the top of the stack to the bottom. to_list and to_array return the elements in order from the top of the stack to the bottom.

Iteration functions (iter, fold, etc.) have unspecified behavior (although they should still be memory-safe) when the stack is mutated while they are running (e.g. by having the passed-in function call push or pop on the stack).

include Container.S1 with type 'a t := 'a t

val mem : 'a t -> 'a -> equal:('a -> 'a -> bool) -> bool
val length : 'a t -> int
val is_empty : 'a t -> bool
val iter : 'a t -> f:('a -> unit) -> unit
val fold : 'a t -> init:'accum -> f:('accum -> 'a -> 'accum) -> 'accum
val fold_result : 'a t -> init:'accum -> f:('accum -> 'a -> ('accum, 'e) Result.t) -> ('accum, 'e) Result.t
val fold_until : 'a t -> init:'accum -> f:('accum -> 'a -> ('accum, 'final) Base__.Container_intf.Export.Continue_or_stop.t) -> finish:('accum -> 'final) -> 'final
val exists : 'a t -> f:('a -> bool) -> bool
val for_all : 'a t -> f:('a -> bool) -> bool
val count : 'a t -> f:('a -> bool) -> int
val sum : (module Base__.Container_intf.Summable with type t = 'sum) -> 'a t -> f:('a -> 'sum) -> 'sum
val find : 'a t -> f:('a -> bool) -> 'a option
val find_map : 'a t -> f:('a -> 'b option) -> 'b option
val to_list : 'a t -> 'a list
val to_array : 'a t -> 'a array
val min_elt : 'a t -> compare:('a -> 'a -> int) -> 'a option
val max_elt : 'a t -> compare:('a -> 'a -> int) -> 'a option

val of_list : 'a list -> 'a t: of_list l returns a stack whose top is the first element of l and bottom is the last element of l.

val create : unit -> _ t: create () returns an empty stack.

val singleton : 'a -> 'a t: singleton a creates a new stack containing only a.

val push : 'a t -> 'a -> unit: push t a adds a to the top of stack t.

val pop : 'a t -> 'a option: pop t removes and returns the top element of t as Some a, or returns None if t is empty.

val pop_exn : 'a t -> 'a
val top : 'a t -> 'a option: top t returns Some a, where a is the top of t, unless is_empty t, in which case top returns None.

val top_exn : 'a t -> 'a
val clear : _ t -> unit: clear t discards all elements from t.

val copy : 'a t -> 'a t: copy t returns a copy of t.

val until_empty : 'a t -> ('a -> unit) -> unit: until_empty t f repeatedly pops an element a off of t and runs f a, until t becomes empty. It is fine if f adds more elements to t, in which case the most-recently-added element will be processed next.

val capacity : _ t -> int: capacity t returns the length of the array backing t.

val set_capacity : _ t -> int -> unit: set_capacity t capacity sets the length of the array backing t to max capacity (length t). To shrink as much as possible, do set_capacity t 0.