computer: part 2

crates/brk_computer/src/storage/vecs/base.rs

@@ -82,7 +82,7 @@ where
         self.vec.version()
     }
 
-    fn len(&self) -> usize {
+    pub fn len(&self) -> usize {
         self.vec.len()
     }
 
@@ -98,6 +98,10 @@ where
         &self.vec
     }
 
+    pub fn mut_any_vec(&mut self) -> &mut dyn AnyStorableVec {
+        &mut self.vec
+    }
+
     pub fn get(&mut self, index: I) -> Result<Option<&T>> {
         self.vec.get(index)
     }