From 900120977ed1f92b1169cb896e000ce13244e9ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=82=B9=E6=99=93=E8=88=AA?= <1210603696@qq.com>
Date: Fri, 10 Oct 2014 16:28:58 +0800
Subject: [PATCH] bug fix

---
 TinySTL/ReverseIterator.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/TinySTL/ReverseIterator.h b/TinySTL/ReverseIterator.h
index 01ecdca..1fe42aa 100644
--- a/TinySTL/ReverseIterator.h
+++ b/TinySTL/ReverseIterator.h
@@ -57,9 +57,9 @@ namespace TinySTL{
 		reference operator[] (difference_type n){
 			return base()[-n - 1];
 		}
-		reverse_iterator operator + (difference_type n);
+		reverse_iterator operator + (difference_type n)const;
 		reverse_iterator& operator += (difference_type n);
-		reverse_iterator operator - (difference_type n);
+		reverse_iterator operator - (difference_type n)const;
 		reverse_iterator& operator -= (difference_type n);
 	private:
 		Iterator advanceNStep(Iterator it,
@@ -134,13 +134,13 @@ namespace TinySTL{
 		return *this;
 	}
 	template<class Iterator>
-	reverse_iterator<Iterator> reverse_iterator<Iterator>::operator + (difference_type n){
+	reverse_iterator<Iterator> reverse_iterator<Iterator>::operator + (difference_type n)const{
 		reverse_iterator<Iterator> res = *this;
 		res += n;
 		return res;
 	}
 	template<class Iterator>
-	reverse_iterator<Iterator> reverse_iterator<Iterator>::operator - (difference_type n){
+	reverse_iterator<Iterator> reverse_iterator<Iterator>::operator - (difference_type n)const{
 		reverse_iterator<Iterator> res = *this;
 		res -= n;
 		return res;