MySQL中,数据库的编码是一个相当重要的问题,有时候我们需要查看一下当前数据库的编码,甚至需要修改一下数据库编码。查看当前数据库编码的SQL语句为:mysql> use xxxDatabase changedmysql> show variables like 'character_set_dat...
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数据库 时间:
2015-10-29 16:04:58
阅读次数:
169
问题描述The string"PAYPALISHIRING"is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed fon...
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其他好文 时间:
2015-10-29 13:15:46
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173
It is possible to define two kinds of methos within a class that can be called without an instance; static methods work roughly like simple instance-l...
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编程语言 时间:
2015-10-28 15:37:37
阅读次数:
245
最近做移动端的数据图,需要设置正负两种柱子,以及正负两种柱子显示不同的颜色,查看API,无奈API太庞大了,求问谷歌,伟大的谷歌给我了正确的答案I have a working chart with negative values. I would like to have columns with...
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其他好文 时间:
2015-10-28 09:32:04
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946
Blocks are Objective-C objects, which means they can be added to collections like NSArray or NSDictionary.Block语法——无参数版本定义(Block的值)^{ NSLog(@"This ...
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其他好文 时间:
2015-10-27 19:47:44
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186
Object和普通变量的区别If you’re used to using terms like the stack and the heap, a local variable is allocated on the stack, while objects are allocated on th...
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其他好文 时间:
2015-10-27 15:05:01
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144
ASIDE: Why System Calls Look Like Procedure Calls?You may wonder why a call to a system call, such as open() or read() looks exactly likea typical pro...
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其他好文 时间:
2015-10-27 13:04:02
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117
SELECT `column` from `table` where locate(‘keyword‘, `condition`)>0; // LOCATE(substr,str,pos);locate 多一个起始位置的参数
SELECT `column` from `table` where position(‘keyword‘ IN `condition`);
SEL...
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数据库 时间:
2015-10-26 20:58:00
阅读次数:
363
{$page}_request('search_factory_infos'));$where['account']=array('like',"%$search_factory_infos%");import('ORG.Util.Page');// 导入分页类$Page =...
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Web程序 时间:
2015-10-26 20:23:29
阅读次数:
160
From the introduction to concurrency, we saw one of the fundamental problems in concurrentprogramming: we would like to execute a series of instructio...
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其他好文 时间:
2015-10-26 13:27:42
阅读次数:
170