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Alex McHugh 2024-06-23 20:24:28 +12:00
parent 3763f976eb
commit f656e950d5
1 changed files with 8 additions and 8 deletions
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16
patches/patches/046_optionals2.patch
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@ -1,18 +1,18 @@
--- exercises/046_optionals2.zig 2024-05-10 23:11:25.796632478 +0200
+++ answers/046_optionals2.zig 2024-05-10 23:10:16.115335668 +0200
@@ -21,7 +21,7 @@
--- exercises/046_optionals2.zig 2024-06-23 19:43:16
+++ answers/046_optionals2.zig 2024-06-23 19:42:46
@@ -22,7 +22,7 @@
const Elephant = struct {
letter: u8,
- tail: *Elephant = null, // Hmm... tail needs something...
+ tail: ?*Elephant = null, // <---- make this optional!
+ tail: ?*Elephant = null, // Hmm... tail needs something...
visited: bool = false,
};
@@ -51,6 +51,6 @@
// We should stop once we encounter a tail that
// does NOT point to another element. What can
// we put here to make that happen?
@@ -66,6 +66,6 @@
// HINT: We want something similar to what `.?` does,
// but instead of ending the program, we want to exit the loop...
- e = e.tail ???
+ e = e.tail orelse break;
}