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| author | Ulrik Sverdrup <bluss@users.noreply.github.com> | 2016-12-03 21:42:03 +0100 |
|---|---|---|
| committer | Ulrik Sverdrup <bluss@users.noreply.github.com> | 2016-12-04 15:46:37 +0100 |
| commit | d53f82c1d037bf224a72a11747e7788f14b52db5 (patch) | |
| tree | c7b487ec64306ea67176585aa11d760dd4be7ea6 /src/liballoc | |
| parent | 705e295b7b93c0861c9d8af4177f6701126683a9 (diff) | |
| download | rust-d53f82c1d037bf224a72a11747e7788f14b52db5.tar.gz rust-d53f82c1d037bf224a72a11747e7788f14b52db5.zip | |
alloc: Forward ExactSizeIterator methods in Iterator for Box<I>
Diffstat (limited to 'src/liballoc')
| -rw-r--r-- | src/liballoc/boxed.rs | 9 | ||||
| -rw-r--r-- | src/liballoc/lib.rs | 1 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs index 28f4dda1408..6d7a9b1d1f9 100644 --- a/src/liballoc/boxed.rs +++ b/src/liballoc/boxed.rs @@ -532,7 +532,14 @@ impl<I: DoubleEndedIterator + ?Sized> DoubleEndedIterator for Box<I> { } } #[stable(feature = "rust1", since = "1.0.0")] -impl<I: ExactSizeIterator + ?Sized> ExactSizeIterator for Box<I> {} +impl<I: ExactSizeIterator + ?Sized> ExactSizeIterator for Box<I> { + fn len(&self) -> usize { + (**self).len() + } + fn is_empty(&self) -> bool { + (**self).is_empty() + } +} #[unstable(feature = "fused", issue = "35602")] impl<I: FusedIterator + ?Sized> FusedIterator for Box<I> {} diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs index 0d450184ed8..acce4ce0358 100644 --- a/src/liballoc/lib.rs +++ b/src/liballoc/lib.rs @@ -79,6 +79,7 @@ #![feature(core_intrinsics)] #![feature(custom_attribute)] #![feature(dropck_parametricity)] +#![cfg_attr(not(test), feature(exact_size_is_empty))] #![feature(fundamental)] #![feature(lang_items)] #![feature(needs_allocator)] |