pub trait ExIndexMut<Idx>: Index<Idx>where
Idx: ?Sized,{
type ExternalTraitSpecificationFor: IndexMut<Idx>;
// Required method
exec fn index_mut(&mut self, index: Idx) -> output : &mut Self::Output
where Idx: Sized;
}pub trait ExIndexMut<Idx>: Index<Idx>where
Idx: ?Sized,{
type ExternalTraitSpecificationFor: IndexMut<Idx>;
// Required method
exec fn index_mut(&mut self, index: Idx) -> output : &mut Self::Output
where Idx: Sized;
}