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Nobody wants the long version of finding out if a variable is set.

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So switched to the short version with 'orelse'. ;)
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Chris Boesch 2024-05-10 23:21:04 +02:00
parent dfdaf03d99
commit 67f87a76c2
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GPG key ID: 8712DF4D3E364668
2 changed files with 7 additions and 10 deletions
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4
exercises/046_optionals2.zig
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@ -51,8 +51,6 @@ fn visitElephants(first_elephant: *Elephant) void {
// We should stop once we encounter a tail that // We should stop once we encounter a tail that
// does NOT point to another element. What can // does NOT point to another element. What can
// we put here to make that happen? // we put here to make that happen?
if (e.tail == null) ???; e = e.tail ???
e = e.tail.?;
} }
} }

13
patches/patches/046_optionals2.patch
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@ -1,5 +1,5 @@
--- exercises/046_optionals2.zig 2023-10-03 22:15:22.122241138 +0200 --- exercises/046_optionals2.zig 2024-05-10 23:11:25.796632478 +0200
+++ answers/046_optionals2.zig 2023-10-05 20:04:07.049433424 +0200 +++ answers/046_optionals2.zig 2024-05-10 23:10:16.115335668 +0200
@@ -21,7 +21,7 @@ @@ -21,7 +21,7 @@
const Elephant = struct { const Elephant = struct {
@ -9,12 +9,11 @@
visited: bool = false, visited: bool = false,
}; };
@@ -51,7 +51,7 @@ @@ -51,6 +51,6 @@
// We should stop once we encounter a tail that // We should stop once we encounter a tail that
// does NOT point to another element. What can // does NOT point to another element. What can
// we put here to make that happen? // we put here to make that happen?
- if (e.tail == null) ???; - e = e.tail ???
+ if (e.tail == null) break; + e = e.tail orelse break;
}
e = e.tail.?;
} }