Method index_mut

cranelift/entity/src/boxed_slice.rs:115–117

(&mut self, k: K)

    K: EntityRef,
{
    fn index_mut(&mut self, k: K) -> &mut V {
        &mut self.elems[k.index()]
    }
}

impl<'a, K, V> IntoIterator for &'a BoxedSlice<K, V>