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POJ 3254 Corn Fields DP 状态压缩 入门
Description Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn for the cows on a number of square...
分类:其他好文   时间:2014-09-23 17:30:45    阅读次数:191
HDU 3572 Task Schedule (最大流)
C -Task ScheduleTime Limit:1000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeHDU 3572DescriptionOur geometry princess XMM has...
分类:其他好文   时间:2014-09-23 16:21:24    阅读次数:206
Nginx模块开发-获取用户ip
先把代码贴在这里,有时间整理if(r->headers_in.x_real_ip != NULL) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%V", &r->headers_in.x_real_ip->value); ...
分类:其他好文   时间:2014-09-23 15:36:14    阅读次数:228
Format operator
The argument of write has to be a string, so if we want to put other values in a file, we have to convert them to strings. The easiest way to do that ...
分类:其他好文   时间:2014-09-23 15:23:24    阅读次数:171
浅谈ADO.NET中的对象——Connection、Command、DataReader、DataAdapter、DataSet、DataTable
SqlDataReader通常和SqlCommand一同使用,常用语简单浏览并且耗时较短的数据库操作。 DataSet长与SqlDataAdapter一同使用,DataSet会将所需数据读取到内存然后断开与SqlDataAdapter的连接,在本地内存进行操作,如需更新时在重新通过SqlDataAdapter刷新数据库。 同时,SqlDataReader、DataSet、DataTable都可以当做数据源直接赋值给某些控件的DataSource属性。...
分类:Web程序   时间:2014-09-23 14:50:24    阅读次数:634
python操作mongodb
出于对mysql的天然不信任(不了解),准备尝试些新东东,redis是内存数据库有些了解,这回试试更有存储感觉的mongodbfrom pymongo import Connectioncon = Connection()connection = pymongo.Connection('localh...
分类:数据库   时间:2014-09-23 13:38:24    阅读次数:240
e.target和e.event和event.srcElement
e.target 是目标对象,e.event是目标所发生的事件,event.srcElement捕获当前事件作用的对象1. 1 $(function(){ 2 $("li:has(ul)").click(function(e){ 3 if(this==e.target){ 4...
分类:其他好文   时间:2014-09-23 12:58:34    阅读次数:184
e.target和e.event和event.srcElement
e.target 是目标对象,e.event是目标所发生的事件,event.srcElement捕获当前事件作用的对象1. 1 $(function(){ 2 $("li:has(ul)").click(function(e){ 3 if(this==e.target){ 4...
分类:其他好文   时间:2014-09-23 12:14:54    阅读次数:240
Hibernate Foreign Key exception
Exception:A Foreign key refering Province from City has the wrong number of column. should be 2发生错误的类 City:@Entity@Table(name = "CITY")@SuppressWarnin...
分类:系统相关   时间:2014-09-23 10:56:14    阅读次数:368
Memory Ordering in Modern Microprocessors
Linux has supported a large number of SMP systems based on a variety of CPUs since the 2.0 kernel. Linux has done an excellent job of abstracting away...
分类:其他好文   时间:2014-09-23 02:06:03    阅读次数:389
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