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Basic0 is the basic signature of an arity-0 bi-mappable type.

Functions mapped over arity-0 types must preserve both element types.

include Types_intf.Bi0
type t

Fixed type of containers.

type left

Fixed type of left elements.

type right

Fixed type of right elements.

include Basic_generic with type ('l, 'r) t := t and type 'l left := left and type 'r right := right
include Types_intf.Bi_generic with type ('l, 'r) t := t with type 'l left := left with type 'r right := right
val bi_map : t -> left:(left -> left) -> right:(right -> right) -> t

bi_map c ~left ~right maps left over every 'l1 left, and right over every 'r1 right, in c.