Module type SetMap.Projection2

type elt_a
type elt_b
type elt_c
type 'a map_a
type 'a map_b
type 'a map_c
val proj2 : (elt_a -> elt_b) -> (elt_a -> elt_c) -> 'b -> ('b -> 'a -> 'b) -> 'a map_a -> 'b map_c map_b
val proj2_monadic : 'parameters -> 'method_handler -> (elt_a -> elt_b) -> (elt_a -> elt_c) -> 'b -> ('parameters -> 'method_handler -> 'b -> 'a -> 'method_handler * 'b) -> 'a map_a -> 'method_handler * 'b map_c map_b