Update data/tutorials/language/1ds_01_arrays.md

Co-authored-by: Christine Rose <[email protected]>
ocaml · Jul 31, 2023 · 05be533 · 05be533
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diff --git a/data/tutorials/language/1ds_01_arrays.md b/data/tutorials/language/1ds_01_arrays.md
@@ -104,7 +104,8 @@ To combine all the elements of an array into a single result, we can use the `Ar
 Here is the signature of `Array.fold_left`:
 
 ```ocaml
-val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b array -> 'a
+# Array.fold_left;;
+val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b array -> 'a = <fun>
 ```
 
 `fold_left f init a` computes `f (... (f(f init a.(0)) a.(1)) ...) a.(n-1)`