diff options
| author |  Hugo Herbelin <Hugo.Herbelin@inria.fr> | 2014-11-18 11:02:17 +0100 |
|---|---|---|
| committer | Hugo Herbelin <Hugo.Herbelin@inria.fr> | 2014-11-19 18:52:13 +0100 |
| commit | d846451c9a07b4e051173878a5446edea029bf5b (patch) | |
| tree | 0e8920a1174b268b6268d5615ffa5941bae3daa7 /lib | |
| parent | 36c2559cefb54dc503fea375d15d3224992f6221 (diff) | |
Making map_union a standard function of the ML library.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/util.ml | 4 | ||||
| -rw-r--r-- | lib/util.mli | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/lib/util.ml b/lib/util.ml index 16b5f4615..531e4fe7d 100644 --- a/lib/util.ml +++ b/lib/util.ml @@ -124,3 +124,7 @@ let delayed_force f = f () type ('a, 'b) union = ('a, 'b) CSig.union = Inl of 'a | Inr of 'b type 'a until = 'a CSig.until = Stop of 'a | Cont of 'a + +let map_union f g = function + | Inl a -> Inl (f a) + | Inr b -> Inr (g b) diff --git a/lib/util.mli b/lib/util.mli index fd766a30f..86720fe47 100644 --- a/lib/util.mli +++ b/lib/util.mli @@ -100,6 +100,8 @@ val delayed_force : 'a delayed -> 'a type ('a, 'b) union = ('a, 'b) CSig.union = Inl of 'a | Inr of 'b (** Union type *) +val map_union : ('a -> 'c) -> ('b -> 'd) -> ('a, 'b) union -> ('c, 'd) union + type 'a until = 'a CSig.until = Stop of 'a | Cont of 'a (** Used for browsable-until structures. *) |