Anybody know if std
could add these generic impls?
impl<'a,T: ToOwned> From<<T as ToOwned>::Owned> for Cow<'a,T> {
fn from(x: <T as ToOwned>::Owned) -> Cow<'a,T> { Cow::Owned(x) }
}
impl<'a,T: ToOwned> From<&'a T> for Cow<'a,T> {
fn from(x: &'a T) -> Cow<'a,T> { Cow::Borrowed(x) }
}