pub type CowSlice<'a, T> = Cow<'a, [T]>;
Represents clone-on-write slices, Cow<'a, [T]>.
Cow<'a, [T]>
pub enum CowSlice<'a, T> { Borrowed(&'a [T]), Owned(<[T] as ToOwned>::Owned), }
Borrowed data.
Owned data.