package travesty

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Module S.With_errors

With_errors specialises On_monad to the error_monad.

include Bi_traversable_types.Basic_generic_on_applicative with type ('l, 'r) t := t with type 'l left := left with type 'r right := R.t with module M := Base.Or_error
include Generic_types.Bi_generic with type ('l, 'r) t := t with type 'l left := left with type 'r right := R.t
val bi_map_m : t -> left:(left -> left Base.Or_error.t) -> right:(R.t -> R.t Base.Or_error.t) -> t Base.Or_error.t

bi_map_m c ~left ~right traverses with left over every 'l1 left, and right over every 'r1 right, in c.

val map_left_m : t -> f:(left -> left Base.Or_error.t) -> t Base.Or_error.t

map_left_m c ~f monadically traverses over the left type of c only, using f.

val map_right_m : t -> f:(R.t -> R.t Base.Or_error.t) -> t Base.Or_error.t

map_right_m c ~f monadically traverses f over the right type of c only, using f.