From 475d32e940630cbb123d6558adb11e5b040d0351 Mon Sep 17 00:00:00 2001
From: "rick.chan" <chenyang@autoai.com>
Date: Fri, 10 Jul 2020 11:38:10 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A1=A5=E5=85=85=20=E6=9D=A1=E4=BB=B6?=
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Signed-off-by: rick.chan <chenyang@autoai.com>
---
 .../Cpp_Standard_Library/vector_补充说明.md     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Software/Development/Library/Cpp_Standard_Library/vector_补充说明.md b/Software/Development/Library/Cpp_Standard_Library/vector_补充说明.md
index c39e84e..966d2bd 100644
--- a/Software/Development/Library/Cpp_Standard_Library/vector_补充说明.md
+++ b/Software/Development/Library/Cpp_Standard_Library/vector_补充说明.md
@@ -24,3 +24,20 @@ for(itr=list.begin(); itr!=list.end();)
 ```
 
 这里，end() 指向最后一个元素的下一个位置；调用 delete (*itr) 释放对象；调用 erase() 后，itr 会自动 +1。因此 delete 必须在 erase() 前调用，由于 delete 后，只是析构了对象而没有修改 list 中的成员，因此可以继续调用 list.erase(itr)，释放 list 中对应的成员。
+
+如果是有条件的删除，则：
+
+```cpp
+vector<ClassA*>::iterator itr;
+
+for(itr=list.begin(); itr!=list.end();)
+{
+    if(...)
+    {
+        delete (*itr);
+        list.erase(itr);
+    }
+    else
+        itr++;
+}
+```