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Avoid calling clone in DoubleEndedIterator implementation of Copied

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Konrad Borowski 2018-12-05 17:55:53 +01:00
parent 431968df37
commit b4a306c1e6
1 changed files with 2 additions and 2 deletions
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4
src/libcore/iter/mod.rs
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@ -553,13 +553,13 @@ impl<'a, I, T: 'a> DoubleEndedIterator for Copied<I>
fn try_rfold<B, F, R>(&mut self, init: B, mut f: F) -> R where
Self: Sized, F: FnMut(B, Self::Item) -> R, R: Try<Ok=B>
{
self.it.try_rfold(init, move |acc, elt| f(acc, elt.clone()))
self.it.try_rfold(init, move |acc, &elt| f(acc, elt))
}
fn rfold<Acc, F>(self, init: Acc, mut f: F) -> Acc
where F: FnMut(Acc, Self::Item) -> Acc,
{
self.it.rfold(init, move |acc, elt| f(acc, elt.clone()))
self.it.rfold(init, move |acc, &elt| f(acc, elt))
}
}