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lsp.stdune
Monoid.Unit
The trivial monoid with empty = () and combine () () = ().
empty = ()
combine () () = ()
type t = Unit.t
val empty : t
Must be the identity of combine:
combine
val combine : t -> t -> t
Must be associative:
module O : sig ... end
val reduce : t list -> t
val map_reduce : f:('a -> t) -> 'a list -> t