Arrow_plus.WITH_COMBINE_AND_NEUTRAL
Exposes the neutral value and combine function, mandatory for each requirement.
neutral
combine
type ('a, 'b) t
The type held by the Arrow_zero.
Arrow_zero
val neutral : ('a, 'b) t
The neutral element of the Arrow_zero.
val combine : ('a, 'b) t -> ('a, 'b) t -> ('a, 'b) t
Combine two values of ('a, 'b) t into one.
('a, 'b) t