lib/rambling/trie/compressor.rb in rambling-trie-0.6.1 vs lib/rambling/trie/compressor.rb in rambling-trie-0.7.0

@@ -25,23 +25,21 @@
 
       def compressable?
         !(root? || terminal?) && children_tree.size == 1
       end
 
-      def merge_with!(child)
+      def merge_with! child
         delete_old_key_on_parent!
         redefine_self! child
 
         children.each { |node| node.parent = self }
       end
 
       def delete_old_key_on_parent!
-        return if parent.nil?
-
-        parent.delete letter
+        parent.delete letter if parent
       end
 
-      def redefine_self!(merged_node)
+      def redefine_self! merged_node
         self.letter = letter.to_s << merged_node.letter.to_s
         self.children_tree = merged_node.children_tree
         self.terminal = merged_node.terminal?
       end
     end