From 129742b46b7bfc613463cefa662dcfe6ef218003 Mon Sep 17 00:00:00 2001
From: Henrique Gemignani Passos Lima <henrique@gemignani.org>
Date: Thu, 20 Oct 2022 17:10:03 +0300
Subject: [PATCH] Improve list::clear

Former-commit-id: 16cb68c709784104f09eba760013e789a7c16d0c
---
 include/rstl/list.hpp | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/include/rstl/list.hpp b/include/rstl/list.hpp
index d8f735e0..c3dc4522 100644
--- a/include/rstl/list.hpp
+++ b/include/rstl/list.hpp
@@ -35,16 +35,7 @@ public:
   }
   void push_back(const T& val) { do_insert_before(x8_end, val); }
   void clear() {
-    // iterator e = end();
-    iterator cur = begin();
-    while (cur != end()) {
-      cur = erase(cur);
-    }
-    // node *e = x8_end;
-    // node *cur = x4_start;
-    // while (cur != e) {
-    //   cur = erase(cur);
-    // }
+    erase(begin(), end());
   }
 
   iterator begin() { return iterator(x4_start); }
@@ -52,6 +43,13 @@ public:
   iterator end() { return iterator(x8_end); }
   const_iterator end() const { return const_iterator(x8_end); }
 
+  void erase(const iterator& start, const iterator& end) {
+    iterator it = start;
+    while (it != end) {
+      erase(it++);
+    }
+  }
+
 private:
   struct node {
     node* x0_prev;