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Oracle中translate与replace的使用 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...应,没有对应就删除原字符串。第一个例子中,2个逗号变成2个加号;第二个例子中,只有c变成加号,其余的删掉了。
1.translate
语法:TRANSLATE(char, from, to)
用法:返回将出现在from中的每个字符替换为to中的相应字符...
正则表达式中的“或”逻辑 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...串即可。(注:| 是或者逻辑,如果是反向不包含,就会变成 且逻辑)' | '连接两个字符串即可。
(注:| 是或者逻辑,如果是反向不包含,就会变成 且逻辑)
a | b a 或 b
^(a | b) 非a 且 非b
1885正则表达式 逻辑
OceanBase使用libeasy原理源码分析:服务器端 - 数据库(内核) - 清泛网 - ...
..._DESTROY,最后将message的引用计数减1.如果message的引用计数变成了0,则将和message关联的easy_pool_t整个给释放掉
2. 调用easy_connection_write_socket将连接的输出缓冲区链表中的数据写出,这个函数调用c->write(实际调用easy_socket_write)将数...
How do I grep recursively?
...-r" only works on newer greps. It doesn't work on the grep that comes with AIX 5.3 for example.
– Withheld
Feb 1 '13 at 13:09
112
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How to get current relative directory of your Makefile?
...
I tried many of these answers, but on my AIX system with gnu make 3.80 I needed to do some things old school.
Turns out that lastword, abspath and realpath were not added until 3.81. :(
mkfile_path := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
mkfile_dir:=...
窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术
...窝的平台影响力可以获得乘数级的放大。
合并后,窝窝变成了“众美窝窝”,从原来的B2C平台,变成了B2B2C平台,成为全产业链的餐饮酒店互联网集团。由于整合了从上游供应到下游消费的整个产业链,“众美窝窝”可以自成...
RVM: Uninstalling all gems of a gemset
...orks well in Ubuntu 10.10
gem list | cut -d" " -f1 | xargs gem uninstall -aIx
PS - removes all local gems. Use sudo accordingly.
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...文件,上面的名称直接复制进去就好
使用上传工具把 linux,oracle的安装包上传到/MNT/ISO目录下
我推荐使用 XME4 企业版
上传工具使用其中的XFTP
5、本地YUM源
5.1挂载镜像
挂载redhat DVD 镜像文件1到/mnt/iso/dvd1 镜...
Programmatically find the number of cores on a machine
...&sysinfo);
int numCPU = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, OpenBSD, etc.
int mib[4];
int numCPU;
std::size_t len = sizeof(numCPU);
/* set the mib for hw.ncpu */
...
How to [recursively] Zip a directory in PHP?
...nction that can compress any file or directory recursively, only needs the zip extension to be loaded.
function Zip($source, $destination)
{
if (!extension_loaded('zip') || !file_exists($source)) {
return false;
}
$zip = new ZipArchive();
if (!$zip->open($destination, ZI...