val (<*>) : 'a Generator.t -> 'a Generator.t -> 'a Generator.t
same as
apply
val (<*) : 'a Generator.t -> 'a Generator.t -> 'a Generator.t
val (*>) : 'a Generator.t -> 'a Generator.t -> 'a Generator.t
val (>>|) : 'a Generator.t -> ('a -> 'b) -> 'a Generator.t