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Rollup merge of #71165 - lcnr:patch-2, r=Amanieu

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`slice::fill`: use `T` instead of generic arg

implements https://github.com/rust-lang/rust/issues/70758#issuecomment-613994427

As the discussion in #70758 has shifted, I now use `T` instead of `&T`.
This commit is contained in:
Dylan DPC 2020-05-03 14:17:53 +05:30 committed by GitHub
commit 8cb8d9cfe2
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1 changed files with 7 additions and 6 deletions
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13
src/libcore/slice/mod.rs
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@ -23,7 +23,6 @@
// * The `raw` and `bytes` submodules. // * The `raw` and `bytes` submodules.
// * Boilerplate trait implementations. // * Boilerplate trait implementations.
use crate::borrow::Borrow;
use crate::cmp; use crate::cmp;
use crate::cmp::Ordering::{self, Equal, Greater, Less}; use crate::cmp::Ordering::{self, Equal, Greater, Less};
use crate::fmt; use crate::fmt;
@ -2157,14 +2156,16 @@ impl<T> [T] {
/// assert_eq!(buf, vec![1; 10]); /// assert_eq!(buf, vec![1; 10]);
/// ``` /// ```
#[unstable(feature = "slice_fill", issue = "70758")] #[unstable(feature = "slice_fill", issue = "70758")]
pub fn fill<V>(&mut self, value: V) pub fn fill(&mut self, value: T)
where where
V: Borrow<T>,
T: Clone, T: Clone,
{ {
let value = value.borrow(); if let Some((last, elems)) = self.split_last_mut() {
for el in self { for el in elems {
el.clone_from(value) el.clone_from(&value);
}
*last = value
} }
} }