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转载 $,$#及$.的区别
$('XXX')//获得标签名为'xxx'的html标签$('#XXX')//获得id='xxx'的html标签$('.XXX')//获得className='xxx'的html标签
2016-12-04 17:44:48
474
转载 Get bit and Set bit
bool GetBit(int n, int index){ return (n&(10);}int SetBit(int n, int index, bool b){ if (b) { return (n | (1 } else { int mask = ~(1
2016-03-27 15:23:39
372
原创 opencart mail服务器的配置
首先,在后台中,网店设置中的,编辑项目-》电子邮件的内容,要与邮件协议-》SMTP用户一致。邮件协议中,所填的内容,见opencart的配置(例如:ssl://smtp.exmail.qq.com, 465 port)
2016-01-27 14:05:37
1193
原创 opencart安装
1. 备份 /var/www/html为html-bak2. 将本地html scp到/var/www/html3. 删除image目录,并且将该目录从html-bak处拷贝过来4. 拷贝html-bak/config.php 到当前目录下5. 拷贝html-bak/admin/config.php 到html-bak/admin下6. chown -R apache.apac
2016-01-24 16:34:07
444
转载 template VS Inheritance
It depends on whether the coupling can be be decided at compile time or must be delayed until runtime.If the coupling between a component and its dependencies is decided permanently at compile time,
2014-02-10 15:23:05
484
转载 C++中的返回值优化(RVO)
http://www.programlife.net/cpp-return-value-optimization.html
2014-01-03 10:23:21
485
转载 #pragma once与 #ifndef的区别
http://www.cppblog.com/szhoftuncun/archive/2012/03/13/35356.html
2013-12-30 17:26:18
393
转载 map VS. hasp_map in C++
http://stackoverflow.com/questions/2189189/map-vs-hash-map-in-chash_map and unordered_map are generally implemented with hash tables. Thus the order is not maintained.unordered_map insert/dele
2013-12-30 10:34:03
599
转载 单链表反转的递归方法
node *reverse(node *head, node*pre) //逆转单链表函数。这是笔试时需要写的最主要函数{ node *p=head->next; head->next = pre; if(p) return reverse(p, head); else
2013-10-29 11:22:34
591
转载 linux进程创建:fork、vfork和clone联系与区别
http://qhwang.blogbus.com/logs/46874395.html另外,延伸:僵尸进程的产生原因,以及如何避免。
2013-09-17 17:28:10
543
原创 关于auto_prt
auto_prt is NOT copy-constructible and assignable.。 所以要特别注意:1. 不能用于STL containers:http://www.devx.com/tips/Tip/136062. 作为函数参数时:onst reference是智能指针作为参数传递的底线1)按值传递时,函数调用过程中在函数的作用域中会产生一个局部对象来
2013-09-13 14:31:52
801
原创 关于Move constructor
Move constructor :1. 包括:Move copy constructor和Move assignment operator2. Move constructor,主要是为了消除临时对象(函数返回值,函数参数)3. 函数的参数为&&http://msdn.microsoft.com/en-us/library/dd293665.aspx
2013-09-13 14:24:26
1825
原创 关于assignment operator
1. 自赋值的情况: if (this == &rhs)2. 返回值为对象的reference: 为了连等的情况。 (a=b)=c3. exceptional safe 的assignment operator: A. http://www.cplusplus.com/articles/y8hv0pDG/ B. Exceptional C++中, Item 9 C.
2013-09-10 18:43:03
535
原创 Howto set maximum user processes on AIX
http://space.itpub.net/38267/viewspace-711745su - rootsmitGoto 'Systems environments'Goto 'Change/Show Characteristics of Operating System'Goto 'Maximum number of PROCESSES allowed per u
2013-06-05 13:04:21
470
转载 GDB 调试子进程 及STL
http://tianhailong2002.blog.163.com/blog/static/109610567200952311629182/set follow-fork-mode child命令设置gdb在fork之后跟踪子进程
2013-06-04 13:04:09
412
转载 关于STL容器线程安全思考
http://www.cnblogs.com/juncheng/articles/1600728.htmlSTL容器(和大多数厂商的愿望)里对多线程支持的黄金规则已经由SGI定义,并且在它们的STL网站[21]上发布。大体上说,你能从实现里确定的最多是下列内容:多个读取者是安全的。多线程可能同时读取一个容器的内容,这将正确地执行。当然,在读取时不能有任何写入者操作这个容器。对不
2013-05-21 16:16:08
554
转载 VS2008如何在release下做debug
http://blog.youkuaiyun.com/iuhsihsow/article/details/8511089
2013-05-21 11:53:21
501
转载 GetCurrentDirectory()和GetModuleFileName()
http://blog.163.com/copy00@126/blog/static/1511499792010329101614722/1. GetCurrentDirectory只是返回当前进程的当前目录,而并不是进程的镜像文件(.exe)所在的目录2.GetCurrentDirectory()适用于XP等系统,,在WinCE上不能使用,GetModuleFileName()适用于
2013-05-08 16:16:21
452
转载 oracle创建多个数据库实例及其管理
http://blog.163.com/tech_web/blog/static/182693002201151011058117/
2013-04-09 16:36:57
627
转载 同步/异步与阻塞/非阻塞的区别
http://www.cppblog.com/converse/archive/2009/05/13/82879.html消息通知和处理消息
2013-03-23 15:00:52
371
转载 Some topics in C++
C++中我们可以用static修饰一个类的成员函数,也可以用const修饰类的成员函数(写在函数的最后表示不能修改成员变量,不是指写在前面表示返回值为常量)。请问:能不能同时用static和const修饰类的成员函数? 分析:答案是不可以。C++编译器在实现const的成员函数的时候为了确保该函数不能修改类的实例的状态,会在函数中添加一个隐式的参数const this*。但当一个成员为st
2013-01-31 15:09:39
266
转载 寻找出现频率超过一半的数
http://blog.youkuaiyun.com/johnny710vip/article/details/6930179假如每次删除两个不同的数(不管包括不包括最高频数),那么,在剩下的数字里,原最高频数出现的频率一样超过了50%,不断重复这个过程,最后剩下的将全是同样的数字,即最高频数。此算法避免的排序,时间复杂度只为O(N)。
2013-01-25 17:42:32
223
转载 判断是否有环和查找入环节点
http://www.cnblogs.com/zemliu/archive/2012/08/15/2640849.html
2013-01-24 16:56:06
447
转载 Segmentation fault(bus error or access violation)的原因
http://en.wikipedia.org/wiki/Segmentation_faultA segmentation fault occurs when a program attempts to access a memory location that it is not allowed to access, or attempts to access a memory
2013-01-24 15:44:35
428
转载 side effect
http://www.learncpp.com/cpp-tutorial/33-incrementdecrement-operators-and-side-effects/A side effect is a result of an operator, expression, statement, or function that persists even after the operat
2013-01-23 10:59:47
282
转载 有关signal的函数(像SIG_IGN等等)
http://www.cplusplus.com/reference/csignal/signal/funcA pointer to a function. This may either be a function defined by the programmer or one of the following predefined functions:SI
2013-01-22 17:27:40
245
转载 An introduction to C++ Traits
http://accu.org/index.php/journals/442http://blog.youkuaiyun.com/chaoojie/article/details/7783727
2013-01-18 17:58:57
367
转载 auto_ptr VS unique_ptr
1. unique_ptr is not a direct replacement. The major flaw that it fixes is the implicit transfer of ownership.std::auto_ptr a(new int(10)), b;b = a; //implicitly transfers ownershipstd::unique_pt
2013-01-18 16:22:10
353
转载 STL中的associative container hash map 红黑树 hash table
hash_map was a common extension provided by many library implementations. That is exactly why it was renamed tounordered_map when it was added to the C++ standard as part of TR1. map is generally im
2013-01-05 13:44:24
361
转载 在数组里查找这样的数,它大于等于左侧所有数,小于等于右侧所有数
http://blog.youkuaiyun.com/beiyeqingteng/article/details/7167823
2013-01-01 17:43:47
266
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