Problem DescriptionNowadays we use content of PM2.5 to discribe the quality of air. The lower content of PM2.5 one city have, the better quality of air it have. So we sort the cities according to the c...
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其他好文 时间:
2015-03-07 22:48:39
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274
为什么要换种方式分页,一个字:太慢了 分页要传入的参数,1:页号,2:行数 分页要取到的数据, 1:总行数,2:单页数据http://www.cnblogs.com/mikedeng/p/better_pagination.html
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其他好文 时间:
2015-03-07 13:51:04
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100
http://www.linuxquestions.org/questions/linux-security-4/which-is-better-rsa-or-dsa-public-key-12593/http://leaf.dragonflybsd.org/mailarchive/users/20...
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其他好文 时间:
2015-03-06 12:38:20
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154
原文: 移除函数调用能有更好的性能 原文出自: http://www.mssqltips.com/sqlservertip/2727/removing-function-calls-for-better-performance-in-sql-server/?utm_source=dailynewsl...
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其他好文 时间:
2015-03-06 12:20:37
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139
本文转载自:http://www.cnblogs.com/rollenholt/archive/2012/03/20/2409046.html1.引言 C++语言的创建初衷是“a better C”,但是这并不意味着C++中类似C语言的全局变量和函数所采用的编译和连接方式与C语言完全相同。作为一种....
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其他好文 时间:
2015-03-05 12:33:26
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130
Problem Description
In China, foreign brand commodities are often much more expensive than abroad. The main reason is that we Chinese people tend to think foreign things are better and we are willing to pay much for them. The typical example is, on the Uni...
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其他好文 时间:
2015-02-23 15:32:28
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231
Language:
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Running
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 5300
Accepted: 1974
Description
The cows are trying to become better athletes...
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其他好文 时间:
2015-02-23 09:44:37
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231
In our modern world, everyone is looking to do things faster, better, smarter, so it‘s no wonder that productivity hacks are incredibly popular. But the truth is that there‘s nothing new under the ...
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其他好文 时间:
2015-02-22 17:25:45
阅读次数:
195
Contents Required packages Basic method Better Method Even-better method Yet Another Even-better method OK, we live in the wonderful world of Linux. B...
mysql数据库sql语句调优 、
索引设计原则:
索引列一般为where子句中的列或连接字句中的列
尽量不对基数小的列做索引,如性别列
尽可能使用短索引:如果对字符列索引尽量指定最小长度。
(short Keys are better,Integer best)
create index cityname on city(city(10));
复合索引前缀特性,索引的顺序很重要。
...
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数据库 时间:
2015-02-14 11:06:31
阅读次数:
195