package monadlib

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Module type `Monad.Stream`

Streams supporting unbounded search. Technically, all streams should be infinite, but for efficiency, we allow them to be truncated. As such, it is impossible to define a general null predicate for streams. Here, we have null return true for the particular case that the stream is an empty list.

type 'a t

include BaseLazyPlus with type 'a m = 'a t Lazy.t

include BatInterfaces.Monad with type 'a m = 'a t Stdlib.Lazy.t

type 'a m = 'a t Lazy.t

val bind : 'a m -> ('a -> 'b m) -> 'b m

val return : 'a -> 'a m

val zero : unit -> 'a m

val lplus : 'a m -> 'a m Lazy.t -> 'a m

val null : 'a m -> bool

null x implies that x is zero. If you do not want to or cannot answer whether a given x is zero, then null x should be false.

val iterate : ('a m -> 'a m) -> 'a m -> 'a m

The sum of the stream [f x, f (f x), f (f (f x)),...]

val delay : 'a m -> 'a m

Delay to prevent deadlock.

val to_depth : int -> 'a m -> 'a m

Search to some depth.

package monadlib

Module type Monad.Stream

Module type `Monad.Stream`