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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tialize方法前,需要手动释放所有的全局或者静态变量。
如何手动释放呢:
设置指针指向NULL
调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
SQL query return data from multiple tables
...mply a color listing so that we know what colors we have in the car yard.
mysql> create table colors(id int(3) not null auto_increment primary key,
-> color varchar(15), paint varchar(10));
Query OK, 0 rows affected (0.01 sec)
mysql> show columns from colors;
+-------+-------------+-...
Web安全测试之XSS - 更多技术 - 清泛网 - 专注C/C++及内核技术
...马等。
作为测试人员,需要了解XSS的原理,攻击场景,如何修复。 才能有效的防止XSS的发生。
阅读目录
XSS 是如何发生的
HTML Encode
XSS 攻击场景
XSS漏洞的修复
如何测试XSS漏洞
HTML Encode 和URL Encode的区别
浏览器中的XSS...
Increasing client_max_body_size in Nginx conf on AWS Elastic Beanstalk
... "/etc/nginx/conf.d/proxy.conf" :
mode: "000755"
owner: root
group: root
content: |
client_max_body_size 20M;
This generates a proxy.conf file inside of the /etc/nginx/conf.d directory. The proxy.conf file simply contains the one liner client_max_body_...
mysql create user if not exists
I have a query to check mysql users list for create new user.
2 Answers
2
...
Unique constraint that allows empty values in MySQL
...
Yes, you can do this. See the MySQL reference (version 5.5).
A UNIQUE index creates a constraint such that all values in the index must be distinct. An error occurs if you try to add a new row with a key value that matches an existing row. For all eng...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
...AL 900 SECOND
ORDER BY id
) u;
Another thing to keep in mind is that mysql documentation suggest that in case of a deadlock the client should retry automatically. you can add this logic to your client code. (Say, 3 retries on this particular error before giving up).
...
Deep Learning(深度学习)学习笔记整理系列之(四) - 大数据 & AI - 清泛...
...,这个AutoEncoder还不能用来分类数据,因为它还没有学习如何去连结一个输入和一个类。它只是学会了如何去重构或者复现它的输入而已。或者说,它只是学习获得了一个可以良好代表输入的特征,这个特征可以最大程度上代表...
