new implementations and one less lifetime bug

Signed-off-by: Ava Hahn <ava@aidanis.online>

the_rewrite/src/func.rs

@@ -49,6 +49,10 @@ impl<'a> FTable<'a> {
     pub fn remove(&self, id: String) {
         self.0.remove(&id);
     }
+
+    pub fn new() -> FTable<'a> {
+        FTable{0: HashMap::<String, Box<Function>>::new()}
+    }
 }
 
 

the_rewrite/src/vars.rs

@@ -35,12 +35,19 @@ impl<'a> VTable<'a> {
     }
 
     pub fn get(&'a self, id: String) -> Option<Box<Ctr<'a>>> {
-        self.0.get(&id)
+        match self.0.get(&id) {
+            Some(s) => Some(s.clone()),
+            None => None,
+        }
     }
 
     pub fn remove(&self, id: String) {
         self.0.remove(&id);
     }
+
+    pub fn new() -> VTable<'a> {
+        VTable{0: HashMap::<String, Box<Ctr>>::new()}
+    }
 }
 
 // returns a callback for the stdlib var export function with env_sync on or off