diff options
Diffstat (limited to 'lib/option.mli')
| -rw-r--r-- | lib/option.mli | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/option.mli b/lib/option.mli index c4d1ebc3a..66f05023f 100644 --- a/lib/option.mli +++ b/lib/option.mli @@ -85,7 +85,13 @@ val fold_left2 : ('a -> 'b -> 'c -> 'a) -> 'a -> 'b option -> 'c option -> 'a (** [fold_right f x a] is [f y a] if [x] is [Some y], and [a] otherwise. *) val fold_right : ('a -> 'b -> 'b) -> 'a option -> 'b -> 'b -(** [fold_map f a x] is [a, f y] if [x] is [Some y], and [a] otherwise. *) +(** [fold_left_map f a x] is [a, f y] if [x] is [Some y], and [a] otherwise. *) +val fold_left_map : ('a -> 'b -> 'a * 'c) -> 'a -> 'b option -> 'a * 'c option + +(** Same as [fold_left_map] on the right *) +val fold_right_map : ('b -> 'a -> 'c * 'a) -> 'b option -> 'a -> 'c option * 'a + +(** @deprecated Same as [fold_left_map] *) val fold_map : ('a -> 'b -> 'a * 'c) -> 'a -> 'b option -> 'a * 'c option (** [cata f e x] is [e] if [x] is [None] and [f a] if [x] is [Some a] *) |