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Get the subdomain from a URL
Getting the subdomain from a URL sounds easy at first.
16 Answers
16
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互联网健身的火爆：技术驱动是内因 资本只是点缀 - 资讯 - 清泛网 - 专注C/...
...够了吗？NO！这些圈子的细分还远远不够！这些圈子里又可以细分为初级圈、中级圈、高级圈……只有这样才能获得不同层次用户的青睐，并找到适合自己的圈子。你以为这样的细分够了吗？NO！这些圈子的细分还远远不够！初...
How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
How to wait in a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ?
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How to make MySQL handle UTF-8 properly
...d to the UTF-8 encoding described above."
– Aaron McDaid
Sep 30 '13 at 9:32
7
MySQL has never had...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...错提示。
QUOTE:
Q：
smtpd认证失败：无权限连接authdaemond
Nov 20 15:58:54 bsd6 postfix/smtpd[900]: warning: SASL authentication failure: cannot connect to Courier authdaemond: Permission denied
A:
检查 authdaemond的socket所在目录及其父目录的属...
In MySQL, can I copy one row to insert into the same table?
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If it's null, it get automatically assigned the next AI number when it's inserted.
– Grim...
Dec 11 '13 at 11:08
3
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How can I reverse a NSArray in Objective-C?
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For obtaining a reversed copy of an array, look at danielpunkass' solution using reverseObjectEnumerator.
For reversing a mutable array, you can add the following category to your code:
@implementation NSMutableArray (Reverse)
- ...
Redefine tab as 4 spaces
...ated by pressing the tab key, which would result in the file literally containing (up to) 4 space characters for each "tab" you type?
Depending on your answer, one of the following sets of
settings should work for you:
For tab characters that appear 4-spaces-wide:
set tabstop=4
If you're using...
What does %~dp0 mean, and how does it work?
... - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
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Hidden features of Python [closed]
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Chaining comparison operators:
>>> x = 5
>>> 1 < x < 10
True
>>> 10 < x < 20
False
>>> x < 10 < x*10 < 100
True
>>> 10 > x <= 9
True
>>> 5 == x ...