Module `Bare.Seq_e`Source

type ('a, 'e) t = unit -> (('a, 'e) node, 'e) result

and (+'a, 'e) node =

| Nil
| Cons of 'a * ('a, 'e) t

include Seqes.Sigs.SEQMON2ALL
  with type ('a, 'e) mon := ('a, 'e) Stdlib.result
  with type ('a, 'e) t := ('a, 'e) t

val equal : ('a -> 'b -> bool) -> ('a, 'e) t -> ('b, 'e) t -> (bool, 'e) result

val compare : ('a -> 'b -> int) -> ('a, 'e) t -> ('b, 'e) t -> (int, 'e) result

val iter : ('a -> unit) -> ('a, 'e) t -> (unit, 'e) result

val fold_left : ('a -> 'b -> 'a) -> 'a -> ('b, 'e) t -> ('a, 'e) result

val iteri : (int -> 'a -> unit) -> ('a, 'e) t -> (unit, 'e) result

val fold_lefti : ('b -> int -> 'a -> 'b) -> 'b -> ('a, 'e) t -> ('b, 'e) result

val for_all : ('a -> bool) -> ('a, 'e) t -> (bool, 'e) result

val exists : ('a -> bool) -> ('a, 'e) t -> (bool, 'e) result

val find : ('a -> bool) -> ('a, 'e) t -> ('a option, 'e) result

val find_map : ('a -> 'b option) -> ('a, 'e) t -> ('b option, 'e) result

val iter2 : ('a -> 'b -> unit) -> ('a, 'e) t -> ('b, 'e) t -> (unit, 'e) result

val fold_left2 : 
  ('a -> 'b -> 'c -> 'a) ->
  'a ->
  ('b, 'e) t ->
  ('c, 'e) t ->
  ('a, 'e) result

val for_all2 : 
  ('a -> 'b -> bool) ->
  ('a, 'e) t ->
  ('b, 'e) t ->
  (bool, 'e) result

val exists2 : 
  ('a -> 'b -> bool) ->
  ('a, 'e) t ->
  ('b, 'e) t ->
  (bool, 'e) result

val init : int -> (int -> 'a) -> ('a, 'e) t

val unfold : ('b -> ('a * 'b) option) -> 'b -> ('a, 'e) t

val forever : (unit -> 'a) -> ('a, 'e) t

val iterate : ('a -> 'a) -> 'a -> ('a, 'e) t

val map : ('a -> 'b) -> ('a, 'e) t -> ('b, 'e) t

val mapi : (int -> 'a -> 'b) -> ('a, 'e) t -> ('b, 'e) t

val filter : ('a -> bool) -> ('a, 'e) t -> ('a, 'e) t

val filter_map : ('a -> 'b option) -> ('a, 'e) t -> ('b, 'e) t

val flat_map : ('a -> ('b, 'e) t) -> ('a, 'e) t -> ('b, 'e) t

val concat_map : ('a -> ('b, 'e) t) -> ('a, 'e) t -> ('b, 'e) t

val scan : ('b -> 'a -> 'b) -> 'b -> ('a, 'e) t -> ('b, 'e) t

val sorted_merge : ('a -> 'a -> int) -> ('a, 'e) t -> ('a, 'e) t -> ('a, 'e) t

val take_while : ('a -> bool) -> ('a, 'e) t -> ('a, 'e) t

val drop_while : ('a -> bool) -> ('a, 'e) t -> ('a, 'e) t

val group : ('a -> 'a -> bool) -> ('a, 'e) t -> (('a, 'e) t, 'e) t

val map2 : ('a -> 'b -> 'c) -> ('a, 'e) t -> ('b, 'e) t -> ('c, 'e) t

val map_product : ('a -> 'b -> 'c) -> ('a, 'e) t -> ('b, 'e) t -> ('c, 'e) t

val partition_map : 
  ('a -> ('b, 'c) Either.t) ->
  ('a, 'e) t ->
  ('b, 'e) t * ('c, 'e) t

val partition : ('a -> bool) -> ('a, 'e) t -> ('a, 'e) t * ('a, 'e) t

val of_dispenser : (unit -> 'a option) -> ('a, 'e) t

val is_empty : ('a, 'e) t -> (bool, 'e) result

val uncons : ('a, 'e) t -> (('a * ('a, 'e) t) option, 'e) result

val length : ('a, 'e) t -> (int, 'e) result

val empty : ('a, 'e) t

val return : 'a -> ('a, 'e) t

val cons : 'a -> ('a, 'e) t -> ('a, 'e) t

val repeat : 'a -> ('a, 'e) t

val cycle : ('a, 'e) t -> ('a, 'e) t

val memoize : ('a, 'e) t -> ('a, 'e) t

val once : ('a, 'e) t -> ('a, 'e) t

val transpose : (('a, 'e) t, 'e) t -> (('a, 'e) t, 'e) t

val append : ('a, 'e) t -> ('a, 'e) t -> ('a, 'e) t

val concat : (('a, 'e) t, 'e) t -> ('a, 'e) t

val zip : ('a, 'e) t -> ('b, 'e) t -> ('a * 'b, 'e) t

val interleave : ('a, 'e) t -> ('a, 'e) t -> ('a, 'e) t

val product : ('a, 'e) t -> ('b, 'e) t -> ('a * 'b, 'e) t

val unzip : ('a * 'b, 'e) t -> ('a, 'e) t * ('b, 'e) t

val split : ('a * 'b, 'e) t -> ('a, 'e) t * ('b, 'e) t

val to_dispenser : ('a, 'e) t -> unit -> ('a option, 'e) result

val ints : int -> (int, 'e) t

val of_seq : 'a Seq.t -> ('a, 'e) t

val return_e : ('a, 'e) result -> ('a, 'e) t

return_e (Ok x) is a whole sequence containing the single element x. return_e (Error e) is a sequence immediately interrupted by the error e.

val interrupted : 'e -> ('a, 'e) t

interrupted e is a sequence immediately interrupted by the error e.

val map_error : ('e -> 'f) -> ('a, 'e) t -> ('a, 'f) t

map_error f seq is a sequence feq.

If seq is a whole sequence, then feq is the same whole sequence.
If seq is an interrupted sequence, then feq is a sequence interrupted by Error (f e) where the elements of the successful prefix are the elements of the successful prefix of seq.

val iter_p : ('a -> unit Lwt.t) -> ('a, 'e) t -> (unit, 'e) result Lwt.t

iter_p f seq is a promise p.

If seq is a whole sequence, then p resolves to Ok () once all the promises created by f on the elements of seq have resolved.
If seq is interrupted by Error e, then p resolves to Error e once all the promises created by f on the elements of the successful prefix of seq have resolved.

Note that the behaviour for interrupted sequences is in line with the best-effort semantic of Lwtreslib.

val cons_e : ('a, 'e) result -> ('a, 'e) t -> ('a, 'e) t

cons_e (Ok x) s is the sequence containing x followed by s. It is a whole sequence if s is.

cons_e (Error e) s is a sequence immediately interrupted by e.

val take : 
  when_negative_length:'err ->
  int ->
  ('a, 'e) t ->
  (('a, 'e) t, 'err) result

val drop : 
  when_negative_length:'err ->
  int ->
  ('a, 'e) t ->
  (('a, 'e) t, 'err) result

module E : 
  Seqes.Sigs.SEQMON2TRANSFORMERS
    with type ('a, 'e) t := ('a, 'e) t
     and type ('a, 'e) mon := ('a, 'e) Stdlib.result
     and type ('a, 'e) callermon := ('a, 'e) Stdlib.result

module S : 
  Seqes.Sigs.SEQMON2TRAVERSORS
    with type ('a, 'e) t := ('a, 'e) t
     and type ('a, 'e) mon := ('a, 'e) Stdlib.result Lwt.t
     and type ('a, 'e) callermon := 'a Lwt.t

module ES : 
  Seqes.Sigs.SEQMON2TRAVERSORS
    with type ('a, 'e) t := ('a, 'e) t
     and type ('a, 'e) mon := ('a, 'e) Stdlib.result Lwt.t
     and type ('a, 'e) callermon := ('a, 'e) Stdlib.result Lwt.t

val of_seq_catch : 'a Seq.t -> ('a, exn) t

of_seq_catch s is a sequence with the same elements as s which is interrupted when forcing an element of the sequence raises an exception.

val of_seq_once : when_forced_twice:'e -> 'a Seq.t -> ('a, 'e) t

of_seq_once ~when_forced_twice s is a sequence with the same elements as s which is interrupted when an element of the sequence is forced twice.

In other words, it is equivalent to

map_error
    (function Seq.Forced_twice -> when_forced_twice | e -> raise e)
    (of_seq_catch (Seq.once s))

val of_seq_e : ('a, 'e) result Seq.t -> ('a, 'e) t

Install

Dune Dependency

Authors

Maintainers

Sources

doc/octez-libs.lwt-result-stdlib/Tezos_lwt_result_stdlib/Lwtreslib/Bare/Seq_e/index.html

Module `Bare.Seq_e`Source

package octez-libs

Install

Dune Dependency

Authors

Maintainers

Sources

doc/octez-libs.lwt-result-stdlib/Tezos_lwt_result_stdlib/Lwtreslib/Bare/Seq_e/index.html

Module Bare.Seq_eSource

Module `Bare.Seq_e`Source