val map : ( 'a -> 'b t ) -> 'a list -> 'b list tval map_right : ( 'a -> 'b t ) -> 'a list -> 'b list tval fold_right : ( 'a -> 'b -> 'b t ) -> 'a list -> 'b -> 'b tval fold_left : ( 'a -> 'b -> 'a t ) -> 'a -> 'b list -> 'a tval iter : ( 'a -> unit t ) -> 'a list -> unit tval map_filter : ( 'a -> 'b option t ) -> 'a list -> 'b list tval fold_left2 :
'a t ->
( 'a -> 'b -> 'c -> 'a t ) ->
'a ->
'b list ->
'c list ->
'a t