Minor cleanup

trie.hpp

@@ -51,7 +51,7 @@ public:
   using post_iterator = trie_iterator<self_t, local_reverse_iterator>;
   using const_post_iterator = trie_iterator<self_t const, local_const_reverse_iterator>;
   using reverse_iterator = trie_reverse_iterator<self_t, local_reverse_iterator>;
-  using const_reverse_iterator = trie_reverse_iterator<self_t const,  local_const_reverse_iterator>;
+  using const_reverse_iterator = trie_reverse_iterator<self_t const, local_const_reverse_iterator>;
 private:
   using impl_iterator = detail::trie_iterator_base<self_t, local_iterator>;
   using impl_const_iterator = detail::trie_iterator_base<self_t, local_const_iterator>;
@@ -77,7 +77,7 @@ public:
     return *emplace(key).first.stk.top();
   }
   self_t & operator[](std::initializer_list<key_type> keys) {
-    return operator[]<std::initializer_list<key_type>>(keys);
+    return operator[]<>(keys);
   }
   
   template <typename KS>
@@ -148,18 +148,21 @@ public:
   void clear();
 private:
   void drop(iterator it);
+  
   template <typename Iter, typename Trie, typename KS>
   friend Iter detail::find_impl(Trie * tr, KS const & keys);
   template <typename Iter, typename Trie>
   static Iter find_impl(Trie * tr, std::initializer_list<key_type> keys) {
-    return detail::find_impl<Iter, Trie, std::initializer_list<key_type>>(tr, keys);
+    return detail::find_impl<Iter>(tr, keys);
   }
+  
   template <typename KS, typename... Args>
   std::pair<impl_iterator, bool> emplace_impl(KS && keys, Args &&... args);
   template <typename... Args>
-  std::pair<impl_iterator, bool> emplace_impl(std::initializer_list<key_type> key, Args &&... args) {
-    return emplace_impl<std::initializer_list<key_type>>(std::move(key), std::forward<Args>(args)...);
+  std::pair<impl_iterator, bool> emplace_impl(std::initializer_list<key_type> keys, Args &&... args) {
+    return emplace_impl<std::initializer_list<key_type>>(std::move(keys), std::forward<Args>(args)...);
   }
+  
   template <typename Key>
   void insert_impl(impl_iterator & out, bool & create, Key && key);