package async_smtp

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package async_smtp
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type 'a t = ('a, Async_smtp__.Reject_or_error.t) Async.Deferred.Result.t
include Core.Monad.S with type 'a t := 'a t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t

t >>= f returns a computation that sequences the computations represented by two monad elements. The resulting computation first does t to yield a value v, and then runs the computation returned by f v.

val (>>|) : 'a t -> ('a -> 'b) -> 'b t

t >>| f is t >>= (fun a -> return (f a)).

module Monad_infix : sig ... end
val bind : 'a t -> f:('a -> 'b t) -> 'b t

bind t ~f = t >>= f

val return : 'a -> 'a t

return v returns the (trivial) computation that returns v.

val map : 'a t -> f:('a -> 'b) -> 'b t

map t ~f is t >>| f.

val join : 'a t t -> 'a t

join t is t >>= (fun t' -> t').

val ignore_m : 'a t -> unit t

ignore_m t is map t ~f:(fun _ -> ()). ignore_m used to be called ignore, but we decided that was a bad name, because it shadowed the widely used Caml.ignore. Some monads still do let ignore = ignore_m for historical reasons.

val all : 'a t list -> 'a list t
val all_unit : unit t list -> unit t

Like all, but ensures that every monadic value in the list produces a unit value, all of which are discarded rather than being collected into a list.

val all_ignore : unit t list -> unit t
  • deprecated [since 2018-02] Use [all_unit]
module Let_syntax : sig ... end

These are convenient to have in scope when programming with a monad:

val exn : ?reject:Smtp_reply.t -> here:Core.Source_code_position.t -> Core.Exn.t -> _ t
val error : ?reject:Smtp_reply.t -> here:Core.Source_code_position.t -> Core.Error.t -> _ t
val error_string : ?reject:Smtp_reply.t -> here:Core.Source_code_position.t -> string -> _ t
val errorf : ?reject:Smtp_reply.t -> here:Core.Source_code_position.t -> ('a, unit, string, _ t) Core.format4 -> 'a
val reject : here:Core.Source_code_position.t -> Smtp_reply.t -> _ t
val tag : tag:string -> ?here:Core.Source_code_position.t -> 'a t -> 'a t
val tag' : ?tag:string -> ?here:Core.Source_code_position.t -> 'a t -> 'a t
val ok : 'a Async.Deferred.t -> 'a t

Helpers to convert to an 'a t. Unlike try_with* below, these will not capture raised exceptions.

val of_or_error : ?tag:string -> here:Core.Source_code_position.t -> 'a Async.Deferred.Or_error.t -> 'a t
val return_or_error : ?tag:string -> here:Core.Source_code_position.t -> 'a Core.Or_error.t -> 'a t
val try_with : ?tag:string -> here:Core.Source_code_position.t -> (unit -> 'a Async.Deferred.t) -> 'a t

Capture any raised exceptions as Errors.

val try_with_join : ?tag:string -> here:Core.Source_code_position.t -> (unit -> 'a t) -> 'a t
val try_with_or_error : ?tag:string -> here:Core.Source_code_position.t -> (unit -> 'a Async.Deferred.Or_error.t) -> 'a t
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