diff options
| -rw-r--r-- | lib/util.ml | 4 | ||||
| -rw-r--r-- | lib/util.mli | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/lib/util.ml b/lib/util.ml index 46ac2e5ce..d6e160efd 100644 --- a/lib/util.ml +++ b/lib/util.ml @@ -603,6 +603,10 @@ let option_fold_left2 f e a b = match (a,b) with | Some x, Some y -> f e x y | _ -> e +let option_fold_right f a e = match a with + | Some x -> f x e + | _ -> e + let option_compare f a b = match (a,b) with | None, None -> true | Some a', Some b' -> f a' b' diff --git a/lib/util.mli b/lib/util.mli index 82e547d3e..85c828abf 100644 --- a/lib/util.mli +++ b/lib/util.mli @@ -178,6 +178,7 @@ val in_some : 'a -> 'a option val out_some : 'a option -> 'a val option_app : ('a -> 'b) -> 'a option -> 'b option val option_cons : 'a option -> 'a list -> 'a list +val option_fold_right : ('a -> 'b -> 'b) -> 'a option -> 'b -> 'b val option_fold_left2 : ('a -> 'b -> 'c -> 'a) -> 'a -> 'b option -> 'c option -> 'a val option_iter : ('a -> unit) -> 'a option -> unit |