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Codeforces Round #258 (Div. 2) B. Sort the Array
Being a programmer, you like arrays a lot. For your birthday, your friends have given you an array a consisting of n distinct integers. Unfortunately, the size of a is too small. You want a bigger ...
分类:其他好文   时间:2015-08-20 21:01:57    阅读次数:278
mssql SUBSTRING和charindex的用法
在工作中用到的例子:select * FROM [CSGDC.DataETLDB].[dbo].[StrategiesList] where strategy_name like '%基建系统%' and SUBSTRING(strategy_name,charindex('_',strat...
分类:数据库   时间:2015-08-20 18:32:34    阅读次数:132
使用Gradle daemon加快Gradle开发速度
It takes a few seconds to finish the process, even there is only one file need to recompile. Because before gradle do any real building job, it has to do some initial work like loading JVM, prepare...
分类:其他好文   时间:2015-08-20 17:05:35    阅读次数:475
Custom ViewGroups
Android provides a few ViewGroups like?LinearLayout,?RelativeLayout,?FrameLayout?to position child Views. These general purpose ViewGroups have quite a lot of options in them. For e.g, LinearL...
分类:其他好文   时间:2015-08-20 10:57:39    阅读次数:212
nginx 部署
nginx服务器部署Nginx是一款轻量级的Web服务器/反向代理服务器及电子邮件(IMAP/POP3)代理服务器,并在一个BSD-like协议下发行。Nginx是由IgorSysoev为俄罗斯访问量第二的Rambler.ru站点开发的,第一个公开版本0.1.0发布于2004年10月4日。其将源代码以类BSD许可证的形式发布,..
分类:其他好文   时间:2015-08-20 10:48:25    阅读次数:335
Mysql优化简介
① Mysql优化的思路 1,SQL语句优化和索引优化 2,数据库表结构的优化 3,系统配置 4,硬件优化 ② 查看慢查询日志状态:show variables like ‘slow_query_log’ 如果上面的结果是OFF,开启慢查询日志:set global slow_query_log=onlog_queries_not_using_indexes表示将记录未使用键的查询。设...
分类:数据库   时间:2015-08-20 10:32:48    阅读次数:217
POJ 3624 (01背包)
Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible from the N (1 ≤...
分类:其他好文   时间:2015-08-20 01:07:01    阅读次数:189
ubuntu中mysql修改编码utf8
摘要:Ubuntu Server 服务器下使用apt-get 命令安装的mysql,默认不是utf8、在这里记录一下如何将编码修改成utf8。办法解决:1.查看mysql编码show variables like '%character%';+--------------------------+-...
分类:数据库   时间:2015-08-19 22:33:32    阅读次数:141
mysql information_schema
SELECT TABLE_NAME,COLUMN_NAME,CHARACTER_MAXIMUM_LENGTH,COLUMN_COMMENT FROM COLUMNS WHERE TABLE_SCHEMA='zhongchao' AND COLUMN_NAME LIKE 'Is%'SELECT * F...
分类:数据库   时间:2015-08-19 20:20:43    阅读次数:139
Django CRM __contains与__icontains区别
http://www.yihaomen.com/article/python/199.htmoperators = { 'exact': '= %s', 'iexact': 'LIKE %s', 'contains': 'LIKE BINARY %s', ...
分类:其他好文   时间:2015-08-19 20:11:51    阅读次数:308
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