package spotlib

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package spotlib
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Module Spotlib.OptionSource

Sourcetype 'a t = 'a option
include Monad.T with type 'a t := 'a option
Sourceval return : 'a -> 'a option
Sourceval bind : 'a option -> ('a -> 'b option) -> 'b option
Sourceval fmap : ('a -> 'b) -> 'a option -> 'b option

fmap in Haskell

Sourceval liftM : ('a -> 'b) -> 'a option -> 'b option

synonym of fmap

Sourceval fmap2 : ('a -> 'b -> 'c) -> 'a option -> 'b option -> 'c option

fmap2 in Haskell

Sourceval liftM2 : ('a -> 'b -> 'c) -> 'a option -> 'b option -> 'c option

synonym of fmap2

Sourceval void : 'a option -> unit option
Sourceval seq : 'a option list -> 'a list option

sequence in Haskell. Not tail recursive.

Sourceval seq_ : unit option list -> unit option

sequence_ in Haskell. Not tail recursive.

Sourceval mapM : ('a -> 'b option) -> 'a list -> 'b list option

Not tail recursive by default

Sourceval mapM_ : ('a -> unit option) -> 'a list -> unit option

Not tail recursive by default

Sourceval iteri : (int -> 'a -> unit option) -> 'a list -> unit option

Iteration with index starting from 0. Not tail recursive by default

Sourceval for_ : int -> int -> (int -> unit option) -> unit option

for like iteration. Not tail recursive by default

Sourceval join : 'a option option -> 'a option
Sourcemodule Infix : sig ... end
Sourcemodule Syntax : Monad.Syntax with type 'a t := 'a option
Sourceval default : 'a t -> (unit -> 'a) -> 'a

Haskell's fromMaybe.

Ex. default (Some v) f = v default None f = f ()

The default value is provided not as a direct value of type 'a but as a thunk (unit -> 'a), since such a value may be created dynamically.

Sourceval catch : (fail:(unit -> 'exn) -> 'a) -> 'a option
Sourceval catch_exn : (unit -> 'a) -> 'a option
Sourceval to_result : 'a option -> ('a, [> `None ]) result
Sourceval to_poly_result : 'a option -> ('a, [> `None ]) Poly_result.t
Sourceval from_Some : 'a option -> 'a

may raise Invalid_argument

Sourceval to_list : 'a option -> 'a list

Conversion to a list

Sourceval format : (Format.formatter -> 'a -> unit) -> Format.formatter -> 'a option -> unit
Sourceval iter : ('a -> unit) -> 'a option -> unit
Sourcemodule Stdlib : sig ... end