pub trait SeqMut<'a, V: 'a + ?Sized>: Seq<'a, V> + CollectionMut + GetMut<usize, Output = V> + Insert<usize, V, Output = ()> + Remove<usize, Output = V> where
&'a Self: 'a + IntoIterator<Item = &'a V>,
&'a mut Self: 'a + IntoIterator<Item = &'a mut V>,
V: 'a, { }
impl<'a, V: ?Sized, T> SeqMut<'a, V> for T where
T: 'a + Seq<'a, V> + CollectionMut + GetMut<usize, Output = V> + Insert<usize, V, Output = ()> + Remove<usize, Output = V>,
&'a T: 'a + IntoIterator<Item = &'a V>,
&'a mut T: 'a + IntoIterator<Item = &'a mut V>,
V: 'a,