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phpcms标签向导有什么用？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...014_website,调取最新的5条新闻，并按倒序排列
{pc:get sql="SELECT title,url FROM v9_news order by id desc" num="5" dbsource= "1014_website" }
{loop $data $n $r}
<li><a href="{$r['url']}" title="{$r['title']}">{$r['title']}</a></li>
{/loop}
{/pc}
3、以碎片方式
{pc:block ...
OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
或
1
sudo -i xcode-select -switch /Applications/Xcode6-Beta6.app/Contents/Developer
2、:-1: error: Could not resolve SDK path for 'macosx10.8'
###export SDKROOT=/Applications/Xcode6-Beta6.app/Contents/Developer/Platforms/Mac...
采花大盗速成秘籍之YQL - 人工智能(AI) - 清泛IT论坛，有思想、有深度
...手了，打开YQL Console，运行如下代码即可获得相关数据：select * from html
where url='http://www.dangdang.com/'
and xpath='//ul[@id="homepage_promotion_count_ul"]/li/p[@class="name"]/a'通过指定XPath，就能得到想要的数据，如果不熟悉XPath，...
mysql实现split分割字符串（length, SUBSTRING_INDEX, substring） - 爬虫/...
...符串，从pos起直到结束
以下通过一个例子查看效果：
SELECT SUBSTRING_INDEX(contentid, '-', 1) first, substring(contentid, 2+length(SUBSTRING_INDEX(contentid, '-', 1))) second, contentid FROM `table_xxx`复制代码
Linq 多字段排序，二次排序 - .NET(C#) - 清泛IT论坛，有思想、有深度
Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );
类似SQL：select * from t1 order by f1 desc ,f2 asc
这种写法里 OrderBy、ThenBy 是升序的，OrderByDescending、ThenByDescending 是降序的。
How do I stop a Git commit when VI is on the screen waiting for a commit message?
...s not beginning with a #) for example by holding v and using arrow keys to select it and then pressing Delete. Quit with :wq to apply changes! If you use :q! the changes will be lost and the previous commit message will be used.
When using VIM it's ok in both cases to quit with :cq - VIM will quit...
Eclipse/Java code completion not working
...heir name)
The Eclipse help page defines the default list to restore:
Select the proposal kinds contained in the 'default' content assist list:
Other Java Proposals,
SWT Template Proposals,
Template Proposals,
Type Proposals
...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...1.42 0.63 0.98 1.20 1.42 1.65 1.87
To get specific statistics, just select them,
df.groupby(['A', 'B'])['C'].describe()[['count', 'mean']]
count mean
A B
bar one 1.0 0.400157
three 1.0 2.240893
two 1.0 -0.977278
foo one 2.0 ...
Redirect parent window from an iframe action
...
While the selected answer is correct, I think this is a better answer for the question's intent. Also, it will work for the people who have JS disabled.
– Michael
Jan 30 '13 at 15:59
...
Purpose of Unions in C and C++
... @legends2k: any decent optimizer will recognize bitwise operations that select an entire byte and generate code to read/write the byte, same as the union but well-defined (and portable). e.g. uint8_t getRed() const { return colour & 0x000000FF; } void setRed(uint8_t r) { colour = (colour &...