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| author | Chris Gregory <czipperz@gmail.com> | 2019-07-07 16:54:48 -0700 |
|---|---|---|
| committer | Chris Gregory <czipperz@gmail.com> | 2019-07-09 21:26:49 -0700 |
| commit | 76a8bc2473e60be35f96ecc268c6bb1d992ede78 (patch) | |
| tree | 167da42753ef916c4053a893ee33682116d4d221 | |
| parent | 481068a707679257e2a738b40987246e0420e787 (diff) | |
| download | rust-76a8bc2473e60be35f96ecc268c6bb1d992ede78.tar.gz rust-76a8bc2473e60be35f96ecc268c6bb1d992ede78.zip | |
Use fold in Iterator::last
Replace last impl with fold
| -rw-r--r-- | src/libcore/iter/traits/iterator.rs | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/libcore/iter/traits/iterator.rs b/src/libcore/iter/traits/iterator.rs index 30923c74145..d934b20a33f 100644 --- a/src/libcore/iter/traits/iterator.rs +++ b/src/libcore/iter/traits/iterator.rs @@ -263,9 +263,7 @@ pub trait Iterator { #[inline] #[stable(feature = "rust1", since = "1.0.0")] fn last(self) -> Option<Self::Item> where Self: Sized { - let mut last = None; - for x in self { last = Some(x); } - last + self.fold(None, |_, x| Some(x)) } /// Returns the `n`th element of the iterator. |