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Rollup merge of #42717 - ollie27:into_to_from2, r=sfackler

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Convert `Into<Box<[T]>> for Vec<T>` into `From<Vec<T>> for Box<[T]>`

As the `collections` crate has been merged into `alloc` in #42648 this impl is now possible. This is the final part of #42129 missing from #42227.
This commit is contained in:
Corey Farwell 2017-06-20 16:28:26 -04:00 committed by GitHub
parent 4c43bc32b7 222a328f5c
commit dbe16e067f
1 changed files with 6 additions and 4 deletions
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10
src/liballoc/vec.rs
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@ -2124,10 +2124,12 @@ fn from(s: Box<[T]>) -> Vec<T> {
} }
} }
#[stable(feature = "box_from_vec", since = "1.18.0")] // note: test pulls in libstd, which causes errors here
impl<T> Into<Box<[T]>> for Vec<T> { #[cfg(not(test))]
fn into(self) -> Box<[T]> { #[stable(feature = "box_from_vec", since = "1.20.0")]
self.into_boxed_slice() impl<T> From<Vec<T>> for Box<[T]> {
fn from(v: Vec<T>) -> Box<[T]> {
v.into_boxed_slice()
} }
} }