Module type Monad_plus.WITH_MAP_AND_JOIN

Minimal definition using neutral, combine, return, map and join.

type 'a t

The type held by the Monad_plus.

include Indexed_monad.WITH_RETURN with type ('a, 'index) t := 'a t
val return : 'a -> 'a t

Lift a value into a t.

include Indexed_bind.WITH_MAP_AND_JOIN with type ('a, 'index) t := 'a t
val map : ('a -> 'b) -> 'a t -> 'b t

Mapping over from 'a to 'b.

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

join remove one level of monadic structure, projecting its bound argument into the outer level.

val combine : 'a t -> 'a t -> 'a t

Combine two values of t into one.

val neutral : 'a t

The neutral element of the t.