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| author | Jonas Schievink <jonasschievink@gmail.com> | 2019-09-18 00:09:19 +0200 |
|---|---|---|
| committer | Jonas Schievink <jonasschievink@gmail.com> | 2019-10-05 15:33:24 +0200 |
| commit | 2cd5030ef592a2d4094145060c031dcae66e624f (patch) | |
| tree | f1b85142ec44701b7d1440281682cfceb0c42df4 /src/liballoc | |
| parent | 2e7244807a7878f6eca3eb7d97ae9b413aa49014 (diff) | |
| download | rust-2cd5030ef592a2d4094145060c031dcae66e624f.tar.gz rust-2cd5030ef592a2d4094145060c031dcae66e624f.zip | |
Deny specializing items not in the parent impl
Diffstat (limited to 'src/liballoc')
| -rw-r--r-- | src/liballoc/boxed.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs index b2789a535fe..adbc0e6ba2c 100644 --- a/src/liballoc/boxed.rs +++ b/src/liballoc/boxed.rs @@ -871,6 +871,11 @@ impl<I: Iterator + ?Sized> Iterator for Box<I> { fn nth(&mut self, n: usize) -> Option<I::Item> { (**self).nth(n) } + default fn last(self) -> Option<I::Item> { + let mut last = None; + for x in self { last = Some(x); } + last + } } #[stable(feature = "rust1", since = "1.0.0")] |