package spotlib

  1. Overview
  2. Docs
package spotlib
Legend:
Library
Module
Module type
Parameter
Class
Class type
type ('a, 'error) t = [
  1. | `Ok of 'a
  2. | `Error of 'error
]

Monad.T2 with type ('a,'error) t := `Ok of 'a | `Error of 'error, but Infix contains extra operators

include Monad.S2 with type ('a, 'error) t := ('a, 'error) t
val return : 'a -> ('a, 'z) t
val bind : ('a, 'z) t -> ('a -> ('b, 'z) t) -> ('b, 'z) t
include Monad.EX2 with type ('a, 'error) t := ('a, 'error) t
val fmap : ('a -> 'b) -> ('a, 'z) t -> ('b, 'z) t

fmap in Haskell

val liftM : ('a -> 'b) -> ('a, 'z) t -> ('b, 'z) t

Synonym of fmap

val fmap2 : ('a -> 'b -> 'c) -> ('a, 'z) t -> ('b, 'z) t -> ('c, 'z) t

fmap2 in Haskell

val liftM2 : ('a -> 'b -> 'c) -> ('a, 'z) t -> ('b, 'z) t -> ('c, 'z) t

synonym of fmap2 in Haskell

val void : ('a, 'z) t -> (unit, 'z) t
val seq : ('a, 'z) t list -> ('a list, 'z) t

sequence in Haskell. Not tail recursive.

val seq_ : (unit, 'z) t list -> (unit, 'z) t

sequence_ in Haskell. Not tail recursive.

val mapM : ('a -> ('b, 'z) t) -> 'a list -> ('b list, 'z) t

Not tail recursive

val mapM_ : ('a -> (unit, 'z) t) -> 'a list -> (unit, 'z) t

Not tail recursive

val iteri : (int -> 'a -> (unit, 'z) t) -> 'a list -> (unit, 'z) t

Iteration with index starting from 0. Not tail recursive.

val for_ : int -> int -> (int -> (unit, 'z) t) -> (unit, 'z) t

for like iteration. Not tail recursive

val join : (('a, 'z) t, 'z) t -> ('a, 'z) t
module Infix : sig ... end
include module type of struct include Infix end
include Monad.Infix2 with type ('a, 'error) t := ('a, 'error) t
val (>>=) : ('a, 'z) t -> ('a -> ('b, 'z) t) -> ('b, 'z) t

synonym of bind

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

synonum of fmap, with the flipped arguments

Applicative style binops

val (^<$>) : ('a -> 'b) -> ('a, 'z) t -> ('b, 'z) t

same as map, <$> in Haskell

val (/<*>) : ('a -> 'b, 'z) t -> ('a, 'z) t -> ('b, 'z) t

<*> in Haskell

val (>>=!) : ('a, 'e) t -> ('e -> ('a, 'e2) t) -> ('a, 'e2) t

bindE

val (>>|!) : ('a, 'e) t -> ('e -> 'e2) -> ('a, 'e2) t

mapE

val fail : 'a -> [> `Error of 'a ]
val catch : (fail:('error -> 'exn) -> 'a) -> [> ('a, 'error) t ]

catch f runs f ~fail.

If f ~fail returns a value v then catch f returns `Ok v.

If f ~fail calls fail e, then the execution of the f ~fail immediately exists and catch f returns `Error e

Any exception raised in f ~fail is not caught.

val catch_exn : (unit -> 'a) -> [> ('a, exn) t ]

catch_exn f runs f ().

If f () returns a value v then catch f returns `Ok v.

If an exception exn raised in f (), catch f returns `Error exn.

val from_Ok : [< ('a, 'error) t ] -> 'a

Haskell's fromJust

val result : ('a -> 'b) -> ('c -> 'b) -> [< ('a, 'c) t ] -> 'b

Haskell's either

val map_error : ('e -> 'f) -> ('a, 'e) t -> ('a, 'f) t
val at_Error : ('err -> 'a) -> [< ('a, 'err) t ] -> 'a

at_Error = result id

val to_option : [< ('a, 'err) t ] -> 'a option

Conversion to option type

module Stdlib : sig ... end
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct