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Mention SliceConcatExt's stability in its docs

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SliceConcatExt's status as an unstable trait with stable methods is
documented in the compiler error for using it, and in
https://doc.rust-lang.org/std/prelude/, but it is not mentioned in the
trait itself.

Mentioning the methods can be used in stable rust today should help
users who are looking for a `join` method while working on stable rust.
This commit is contained in:
David Ross 2018-01-01 19:14:32 -08:00
parent b65f0bedd2
commit d5acd23565
1 changed files with 8 additions and 0 deletions
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8
src/liballoc/slice.rs
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@ -1725,6 +1725,14 @@ impl [u8] {
reason = "trait should not have to exist",
issue = "27747")]
/// An extension trait for concatenating slices
///
/// While this trait is unstable, the methods are stable. `SliceConcatExt` is
/// included in the [standard library prelude], so you can use [`join()`] and
/// [`concat()`] as if they existed on `[T]` itself.
///
/// [standard library prelude]: ../../std/prelude/index.html
/// [`join()`]: #tymethod.join
/// [`concat()`]: #tymethod.concat
pub trait SliceConcatExt<T: ?Sized> {
#[unstable(feature = "slice_concat_ext",
reason = "trait should not have to exist",