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Tetris-ing an array
...lt; $count; $i++) {
$length = min($length, strspn($array[$i] ^ $first, chr(0)));
}
After that single loop, the $length variable will be equal to the longest common basepart between the array of strings. Then, we can extract the common part from the first element:
$common = substr($array[0], ...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...
2014_11_05/
2014_11_06/
2014_11_07/
2014_11_10/
然后开始删除从最早的开始删除
检查一些无用的archivelog
RMAN> crosscheck archivelog all;
删除过期的归档
RMAN> delete expired archivelog all;
注:删除过期的归档
这样就把归档文件删除了...
How to remove all whitespace from a string?
...ish(.))) %>%
ungroup()
df
# A tibble: 2 x 2
a b
<chr> <chr>
1 aZe aze s 12 12
2 wxc s aze 34e e4
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follo...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...iner,Tag>::type& i = get<Tag>(s);这段代码定义了一个容器索引,从容器s中提取出Tag标签作为索引的序列i(对于有序的容器也可以说是用Tag排序的序列),接下来是typedef typename MultiIndexContainer::value_type value_type;语句定义了容器的元素类...
linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有区域数据的文件,并对整个区域数据进行管理。
slave(从服务器或叫辅助服务器):拥有主DNS服力器的区域文件的副 本,辅助主DNS服务器对客户端进行解析,当主DNS服务器坏了后,可以完全接替主服务器的工作。
forward:将任...
中文网(自研/维护)拓展 · App Inventor 2 中文网
...
Copy(text)
拷贝文本到剪贴板。
Paste()
从剪贴板粘贴内容并返回文本。
ECharts
Component for ECharts
属性
ShowAnimation
动画是否开启。
ShowValue
是否显示数字提示。
ThemeIndex
...
Windows XP or later Windows: How can I run a batch file in the background with no window displayed?
...
Do you need the second batch file to run asynchronously? Typically one batch file runs another synchronously with the call command, and the second one would share the first one's window.
You can use start /b second.bat to launch a second batch file asynchronously from...
How to read data when some numbers contain commas as thousand separator?
..."1,800\"\n\"3500\"\n6.5")
Source: local data frame [4 x 1]
numbers
(chr)
1 800
2 1,800
3 3500
4 6.5
(Notice that it is now a chr (character) instead of a numeric.)
Or, more dangerously, if it were long enough and most of the early elements did not contain commas:
> set.see...
Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...,还请见谅!
开始之前的准备
正如C语言教程从 hello world 开始,我们也由一个 crackme 说开去。本文的例子程序你可以到这来下载:
http://www.crackmes.de/users/veneta/crackmes/linux_crackme_v2 。古人云“工欲善其事,必先利其器”...
HAXM 安装/启动失败? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!
...t hypervisorlaunchtype off运行后 重启电脑
HAXM 设备文件丢失
从错误提示 Unable to open HAXM device: ERROR_FILE_NOT_FOUND 看,可能是 HAXM 设备文件缺失。尝试重新安装 HAXM,或在命令行执行:sc query intelhaxm
如果没有输出,则可能 HAXM 没有正...
