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