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add IArray.iteri2

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This commit is contained in:
Simon Cruanes 2021-06-15 20:54:43 -04:00
parent 252f7243a4
commit e979b88148
2 changed files with 8 additions and 0 deletions
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6
src/util/IArray.ml
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@ -165,6 +165,12 @@ let iter2 f a b =
f (unsafe_get a i) (unsafe_get b i)
done
let iteri2 f a b =
if length a <> length b then invalid_arg "iteri2";
for i = 0 to length a-1 do
f i (unsafe_get a i) (unsafe_get b i)
done
let fold2 f acc a b =
if length a <> length b then invalid_arg "fold2";
let rec aux acc i =

2
src/util/IArray.mli
View file

@ -106,5 +106,7 @@ val map2 : ('a -> 'b -> 'c) -> 'a t -> 'b t -> 'c t
val fold2 : ('acc -> 'a -> 'b -> 'acc) -> 'acc -> 'a t -> 'b t -> 'acc
val iteri2 : (int -> 'a -> 'b -> unit) -> 'a t -> 'b t -> unit
val iter2 : ('a -> 'b -> unit) -> 'a t -> 'b t -> unit