20 lines
634 B
Diff
20 lines
634 B
Diff
--- exercises/046_optionals2.zig 2023-10-03 22:15:22.122241138 +0200
|
|
+++ answers/046_optionals2.zig 2023-10-05 20:04:07.049433424 +0200
|
|
@@ -21,7 +21,7 @@
|
|
|
|
const Elephant = struct {
|
|
letter: u8,
|
|
- tail: *Elephant = null, // Hmm... tail needs something...
|
|
+ tail: ?*Elephant = null, // <---- make this optional!
|
|
visited: bool = false,
|
|
};
|
|
|
|
@@ -51,7 +51,7 @@
|
|
// We should stop once we encounter a tail that
|
|
// does NOT point to another element. What can
|
|
// we put here to make that happen?
|
|
- if (e.tail == null) ???;
|
|
+ if (e.tail == null) break;
|
|
|
|
e = e.tail.?;
|
|
}
|