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MySQL_TRUNCATE_清空table里的记录
MySQL_TRUNCATE_清空table里的记录 MySQL TRUNCATE 语法 TRUNCATE?[TABLE]?tbl_name TRUNCATE TABLE empties a table completely. It requires the DROP privilege. Logically, TRUNCATE TABLE is similar to a...
分类:数据库   时间:2014-10-31 12:16:00    阅读次数:268
常见验证码的弱点与验证码识别
0x00 简介验证码作为一种辅助安全手段在Web安全中有着特殊的地位,验证码安全和web应用中的众多漏洞相比似乎微不足道,但是千里之堤毁于蚁穴,有些时候如果能绕过验证码,则可以把手动变为自动,对于Web安全检测有很大的帮助。全自动区分计算机和人类的图灵测试(英语:Completely Automat...
分类:其他好文   时间:2014-10-30 22:26:05    阅读次数:320
Android - View Alpha值
Android - View Alpha值本文地址: http://blog.csdn.net/caroline_wendyAlpha值主要控制图像的透明度(0-1),0代表透明,1代表不透明。Sets the opacity of the view. This is a value from 0 to 1, where 0 means the view is completely transpa...
分类:移动开发   时间:2014-10-30 19:09:33    阅读次数:236
MyEclipse 项目部署到tomcat时出现错误之——deploy
错误信息: ????? 项目名称?could not be redeployed because it could not be completely removed inthe undeployment phase. The most common cause of this problem is attempting to redeploy while th...
分类:系统相关   时间:2014-10-24 19:15:48    阅读次数:357
Linux 2.6 完全公平调度算法CFS(Completely Fair Scheduler)分析
转自http://www.ibm.com/developerworks/cn/linux/l-completely-fair-scheduler/index.html?ca=drs-cn-0125 Linux 调度器简史 早期的 Linux 调度器使用了最低的设计,它显然不关注具有很多处理器的大型架构,更不用说是超线程了。1.2 Linux 调度器使用了环形队列用于可运行的任务管理,使用循环调...
分类:编程语言   时间:2014-10-21 08:57:04    阅读次数:330
uva 10020 Minimal coverage 【贪心】+【区间完全覆盖】
Minimal coverage  The Problem Given several segments of line (int the X axis) with coordinates [Li,Ri]. You are to choose the minimal amount of them, such they would completely cover the segment [0,...
分类:其他好文   时间:2014-10-14 23:52:09    阅读次数:247
在linux系统中I/O 调度的选择 (转)
I/O 调度算法再各个进程竞争磁盘I/O的时候担当了裁判的角色。他要求请求的次序和时机做最优化的处理,以求得尽可能最好的整体I/O性能。在linux下面列出4种调度算法CFQ (Completely Fair Queuing 完全公平的排队)(elevator=cfq):这是默认算法,对于通用服务器...
分类:系统相关   时间:2014-09-12 20:38:24    阅读次数:319
UVA-10603-Fill(BFS+优先队列)
There are three jugs with a volume of a, b and c liters. (a, b, and c are positive integers not greater than 200). The first and the second jug are initially empty, while the third is completely fill...
分类:其他好文   时间:2014-09-02 22:55:45    阅读次数:289
cycling -avoid the vicious cycle
‘Numerous' studies in the past appear to have shown a link between cycling and ED. The researchers admit that they 'cannot completely discount' thes.....
分类:其他好文   时间:2014-09-02 15:33:04    阅读次数:265
Codeforces Round #261 (Div. 2) E (DP)
E. Pashmak and GraphPashmak's homework is a problem about graphs. Although he always tries to do his homework completely, he can't solve this problem....
分类:其他好文   时间:2014-08-16 12:27:20    阅读次数:211
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