码迷,mamicode.com
首页 >  
搜索关键字:between    ( 3707个结果
PHP分页优化
最快select id,name,content,time,re_id,is_replay from tb_content where re_id = 0 and id between 19993 and 19998 order by id desc大于10000条以上用select id,nam....
分类:Web程序   时间:2015-03-18 17:44:50    阅读次数:164
LeetCode Maximum Gap
Given an unsorted array, find the maximum difference between the successive elements in its sorted form.Try to solve it in linear time/space.Return 0 if the array contains less than 2 elements.You may...
分类:其他好文   时间:2015-03-18 09:04:03    阅读次数:154
display:none和visibility:hidden的区别
本篇文章由:http://xinpure.com/difference-between-displaynone-and-visibilityhidden/区别分析首先我们都知道,display: none 和 visibility: hidden 都可以起到隐藏元素的功能两者的区别在于占用文档流的不...
分类:其他好文   时间:2015-03-17 23:31:10    阅读次数:284
Circular dependency issuse on cocoapods version(0.36.0) 完全解决方案(非降版本)
此前的文章中,曾经提到在cocoapods依赖管理版本如果超过0.34.4,比如0.35, 0.36.0等版本中。执行"pod install" 或者 "pod update" , xmppframework 会出现循环依赖问题。 There is a circular dependency between XMPPFramework/Core and XMPPFramework/Authent...
分类:其他好文   时间:2015-03-17 20:19:14    阅读次数:146
CSS3中伪类nth-child和nth-of-type区别
本篇文章由:http://xinpure.com/css3-pseudo-class-difference-between-nthchild-and-nthoftype/首先来看看 nth-child(n) 和 nth-of-type(n) 的共同点两者唯一的共同点就是: 参数n的用法n 可以是数字...
分类:Web程序   时间:2015-03-17 00:27:47    阅读次数:190
为什么基于TCP的应用需要心跳包(TCP keep-alive原理分析)
TCP keep-alive的三个参数用man命令,可以查看linux的tcp的参数:man 7 tcp其中keep-alive相关的参数有三个: tcp_keepalive_intvl (integer; default: 75; since Linux 2.4) The number of seconds between TCP keep-alive pr...
分类:其他好文   时间:2015-03-16 19:19:08    阅读次数:144
Binary Tree Zigzag Level Order Traversal
Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: Given binary tr...
分类:其他好文   时间:2015-03-16 16:34:14    阅读次数:107
A1072. Gas Station (30)
A gas station has to be built at such a location that the minimum distance between the station and any of the residential housing is as far away as po...
分类:其他好文   时间:2015-03-16 12:51:44    阅读次数:137
hdu1385 Minimum Transport Cost
Problem DescriptionThese are N cities in Spring country. Between each pair of cities there may be one transportation track or none. Now there is some ...
分类:其他好文   时间:2015-03-15 19:36:48    阅读次数:135
mysql优化
1、利用show profiles; show profile for query 4; 查看具体的信息,分析返回的时间.2、不做无所谓的排序,尽量在索引中完成.3、limit基数比较大时,使用between..and..,效率高.4、explain select 语句; 分析具体信息.5、对于in...
分类:数据库   时间:2015-03-15 16:49:01    阅读次数:190
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!