Format examples

examples/arrays/arrays.ncl

@@ -3,15 +3,17 @@
 # Example array functions. This code is illustrative: prefer using the array
 # stdlib functions `std.array.map` and `std.array.fold_right` instead.
 let my_array_lib = {
-  map : forall a b. (a -> b) -> Array a -> Array b = fun f arr =>
+  map : forall a b. (a -> b) -> Array a -> Array b
+    = fun f arr =>
       if arr == [] then
         []
       else
         let head = std.array.first arr in
         let tail = std.array.drop_first arr in
         [f head] @ map f tail,
 
-  fold : forall a b. (a -> b -> b) -> b -> Array a -> b = fun f first arr =>
+  fold : forall a b. (a -> b -> b) -> b -> Array a -> b
+    = fun f first arr =>
       if arr == [] then
         first
       else