Fixed KVStore get method to take mut self

src/database/mod.rs

@@ -87,7 +87,7 @@ pub enum Datatype {
 pub trait KVStore<R: Record> {
     fn put(&mut self, key: State, record: &R);
     fn get(&self, key: State) -> Option<&BitSlice<u8, Msb0>>;
-    fn del(&self, key: State);
+    fn del(&mut self, key: State);
 }
 
 /// Allows a database to be evicted to persistent media. Implementing this trait

src/database/vector/mod.rs

@@ -65,7 +65,7 @@ impl<R: Record> KVStore<R> for Database<'_> {
         todo!()
     }
 
-    fn del(&self, key: State) {
+    fn del(&mut self, key: State) {
         todo!()
     }
 }

src/database/volatile/mod.rs

@@ -38,7 +38,7 @@ impl<R: Record> KVStore<R> for Database<'_> {
         todo!()
     }
 
-    fn del(&self, key: State) {
+    fn del(&mut self, key: State) {
         todo!()
     }
 }