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Naming convention for unique constraint
...r indices and constraints:
Primary key. _PK
Unique index/constraint. _AK{xx}
Non-Unique index. _IX{xx}
Check constraint. _CK{xx}
Default constraint. _DF{xx}
Foreign key constraint. _FK{xx}
Where {xx} is a 2-digit sequence number, starting at 01 for each constraint type per table. Primary key doe...
Rebase a single Git commit
...
You can cherry-pick XX to master.
git checkout master
git cherry-pick <commit ID of XX>
And remove the last commit from the feature branch with git reset.
git checkout Feature-branch
git reset --hard HEAD^
...
Link to the issue number on GitHub within a commit message
...
Just include #xxx in your commit message to reference an issue without closing it.
With new GitHub issues 2.0 you can use these synonyms to reference an issue and close it (in your commit message):
fix #xxx
fixes #xxx
fixed #xxx
close #...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...(50, frequencies[i] / 100 - 80)), '#');
System.out.printf("0.%dxxx: %6d :%s%n", i, frequencies[i], new String(bar));
}
}
}
The average result looks like this:
QR distribution |8000 |9000 |10000 |11000 |12000
0.0xxx: 11376 :################################...
Linux ftp上传文件 实战篇 - 开源 & Github - 清泛网 - 专注IT技能提升
... get等Linux命令完成ftp文件上传下载。连接FTP命令：
$ftp xx.xx.xx.xx
username
password
ftp> passive
（需要关闭passive模式，不然上传不了）
查看远程FTP服务器文件命令：
ftp> ls
若ls卡住不动(如上图)，是由于防火墙未关闭导...
Linux Shell脚本参数的获取方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...数$# 参数个数（脚本名除外）$? 取上个命令退出码（exit xx, 函数return xx）一般0成功,1失败#! bin shecho ...$0 (脚本名)，$1-$9 参数$# 参数个数（脚本名除外）
$? 取上个命令退出码（exit xx, 函数return xx）一般0成功,1失败
#!/bin/sh
echo '...
Linux ftp上传文件 实战篇 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... get等Linux命令完成ftp文件上传下载。连接FTP命令：
$ftp xx.xx.xx.xx
username
password
ftp> passive
（需要关闭passive模式，不然上传不了）
查看远程FTP服务器文件命令：
ftp> ls
若ls卡住不动(如上图)，是由于防火墙未关闭导...
Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
I was told I can add the -XX:+HeapDumpOnOutOfMemoryError parameter to my JVM start up options to my JBoss start up script to get a heap dump when we get an out of memory error in our application. I was wondering where this data gets dumped? Is it just to the console, or to some log file? If it'...
HTML5 Canvas Resize (Downscale) Image High Quality?
... var w0 = dy * dy; //pre-calc part of w
var xx_start = Math.floor(i * ratio_w);
var xx_stop = Math.ceil((i + 1) * ratio_w);
for (var xx = xx_start; xx < xx_stop; xx++) {
var dx = Math.abs(center_x - (xx + 0.5)) / r...
How do I use LINQ Contains(string[]) instead of Contains(string)
...; table = GetDataFromSomewhere();
List<user> newTable = table.Where(xx => uids.Contains(xx.uid)).ToList();
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