package monadlib

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Module Monad.ListT

The list monad transformer will add non-determinism to computations. I have not provided a transformer for lazy lists, since I'm not yet sure how to implement it. It would probably need a lazy version of map_m, but it's not clear to me how to write this, since whether the computations are strict will determine whether the argument has to be completely forced.

Parameters

module M : BatInterfaces.Monad

Signature

include Monad with type 'a m = 'a list M.m
include BatInterfaces.Monad with type 'a m = 'a list M.m
type 'a m = 'a list M.m
val bind : 'a m -> ('a -> 'b m) -> 'b m
include Applicative.Applicative with type 'a m := 'a m
include Applicative.Base with type 'a m := 'a m
val return : 'a -> 'a m
val (<*>) : ('a -> 'b) m -> 'a m -> 'b m
val lift1 : ('a -> 'b) -> 'a m -> 'b m
val lift2 : ('a -> 'b -> 'c) -> 'a m -> 'b m -> 'c m
val lift3 : ('a -> 'b -> 'c -> 'd) -> 'a m -> 'b m -> 'c m -> 'd m
val lift4 : ('a -> 'b -> 'c -> 'd -> 'e) -> 'a m -> 'b m -> 'c m -> 'd m -> 'e m
val (<$>) : ('a -> 'b) -> 'a m -> 'b m

Alias for lift1.

val sequence : 'a m list -> 'a list m
val map_a : ('a -> 'b m) -> 'a list -> 'b list m
val (<*) : 'a m -> 'b m -> 'a m
val (>*) : 'a m -> 'b m -> 'b m
val (>>=) : 'a m -> ('a -> 'b m) -> 'b m
val join : 'a m m -> 'a m
val filter_m : ('a -> bool m) -> 'a list -> 'a list m
val onlyif : bool -> unit m -> unit m
val unless : bool -> unit m -> unit m
val ignore : 'a m -> unit m
val lift : 'a M.m -> 'a m