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Cow from array #117342

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Cow from array #117342

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5d402ce
cow from array
bend-n Oct 29, 2023
1935bf7
change since fieled
bend-n Nov 11, 2023
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13 changes: 13 additions & 0 deletions library/alloc/src/vec/cow.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,19 @@ impl<'a, T: Clone> From<&'a [T]> for Cow<'a, [T]> {
}
}

#[stable(feature = "cow_from_array", since = "CURRENT_RUSTC_VERSION")]
impl<'a, const N: usize, T: Clone> From<&'a [T; N]> for Cow<'a, [T]> {
/// Creates a [`Borrowed`] variant of [`Cow`]
/// from a array.
///
/// This conversion does not allocate or clone the data.
///
/// [`Borrowed`]: crate::borrow::Cow::Borrowed
fn from(s: &'a [T; N]) -> Cow<'a, [T]> {
Cow::Borrowed(s)
}
}

#[stable(feature = "cow_from_vec", since = "1.8.0")]
impl<'a, T: Clone> From<Vec<T>> for Cow<'a, [T]> {
/// Creates an [`Owned`] variant of [`Cow`]
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